CELEX: 42008X0711(01)
Language: en
Date: 2008-07-11 00:00:00
Title: Regulation No 54 of the Economic Commission for Europe of the United Nations (UNECE) — Uniform provisions concerning the approval of pneumatic tyres for commercial vehicles and their trailers

11.7.2008   
            
            
               EN
            
            
               Official Journal of the European Union
            
            
               L 183/41
            
         Only the original UNECE texts have legal effect under international public law. The status and date of entry into force of this Regulation should be checked in the latest version of the UN/ECE status document TRANS/WP.29/343, available at: http://www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29fdocstts.html
   Regulation No 54 of the Economic Commission for Europe of the United Nations (UNECE) — Uniform provisions concerning the approval of pneumatic tyres for commercial vehicles and their trailers
   Incorporating all valid text up to:
   Supplement 16 to the original version of the Regulation — Date of entry into force: 13 November 2004
   CONTENTS
   REGULATION
   
               1.
            
            Scope
         
               2.
            
            Definitions
         
               3.
            
            Markings
         
               4.
            
            Application for approval
         
               5.
            
            Approval
         
               6.
            
            Specifications
         
               7.
            
            Modification and extension of approval of a tyre type
         
               8.
            
            Conformity of production
         
               9.
            
            Penalties for non-conformity of production
         
               10.
            
            Production definitely discontinued
         
               11.
            
            Names and addresses of technical services responsible for conducting approval tests, and of administrative departments
         ANNEXES
   
               Annex I
            
            Communication concerning the approval or extension or refusal or withdrawal of approval or production definitely discontinued of a type of pneumatic tyre for motor vehicles pursuant to Regulation No 54
         
               Annex II
            
            Arrangement of approval mark
         
               Annex III
            
            Arrangement of tyre markings
         
               Annex IV
            
            List of symbols of load-capacity indices
         
               Annex V
            
            Tyre-size designation and dimensions: Part I — European tyres; Part II — United States tyres
         
               Annex VI
            
            Method of measuring pneumatic tyres
         
               Annex VII
            
            Procedure for load/speed endurance tests
         
               Appendix 1 —
            
            Endurance-test programme
         
               Appendix 2 —
            
            Relation between the pressure index and the units of pressure
         
               Annex VIII
            
            Variation of load capacity with speed commercial vehicle tyres, radial and diagonal
         
               Annex IX
            
            COMMUNICATION, Upgrade of Service Description for the purposes of retreading in accordance with Regulation No 109
         1.   SCOPE
   This Regulation covers new pneumatic tyres designed primarily, but not only, for vehicles in categories M2, M3, N and O3 and O4. (1) However, it does not apply to tyre types identified by speed category symbols corresponding to speeds below 80 km/h.
   2.   DEFINITIONS
   For the purposes of this Regulation:
   
               2.1.
            
            
               ‘Type of pneumatic tyre’ means a category of pneumatic tyres which do not differ in such essential respects as:
               
                           2.1.1.
                        
                        
                           The manufacturer;
                        
                     
                           2.1.2.
                        
                        
                           Tyre-size designation;
                        
                     
                           2.1.3.
                        
                        
                           Category of use;
                        
                     
                           2.1.4.
                        
                        
                           Structure (diagonal (bias-ply); radial);
                        
                     
                           2.1.5.
                        
                        
                           Speed category;
                        
                     
                           2.1.6.
                        
                        
                           Load-capacity indices; and
                        
                     
                           2.1.7.
                        
                        
                           Cross-section;
                        
                     
         
               2.2.
            
            
               Category of use:
               
                           2.2.1.
                        
                        
                           ‘Normal tyre’ means a tyre intended for normal, everyday, on-road use;
                        
                     
                           2.2.2.
                        
                        
                           ‘Special use tyre’ means a tyre intended for mixed use both on- and off-road or for other special duty.
                        
                     
                           2.2.3.
                        
                        
                           ‘Snow tyre’ means a tyre whose tread pattern, tread compound or structure are primarily designed to achieve in snow conditions a performance better than that of a normal tyre with regard to its ability to initiate or maintain vehicle motion.
                        
                     
         
               2.3.
            
            
               ‘Structure’ of a pneumatic tyre means the technical characteristics of the tyre's carcass. A distinction is made between the following structures in particular:
               
                           2.3.1.
                        
                        
                           ‘Diagonal’ or ‘bias-ply’ describes a pneumatic-tyre structure in which the ply cords extend to the beads and are laid at alternate angles substantially less than 90 ° to the centreline of the tread;
                        
                     
                           2.3.2.
                        
                        
                           ‘Radial’ describes a pneumatic-tyre structure in which the ply cords extend to the beads and are laid substantially at 90 ° to the centreline of the tread, the carcass being stabilized by an essentially inextensible circumferential belt.
                        
                     
         
               2.4.
            
            
               ‘Bead’ means the part of a pneumatic tyre which is of such shape and structure as to fit the rim and to hold the tyre on it (2);
            
         
               2.5.
            
            
               ‘Cord’ means the strands forming the fabric of the plies in the pneumatic tyre (2);
            
         
               2.6.
            
            
               ‘Ply’ means a layer of rubber-coated parallel cords (2);
            
         
               2.7.
            
            
               ‘Carcass’ means that part of a pneumatic tyre other than the tread and the rubber sidewalls which, when inflated, bears the load (2);
            
         
               2.8.
            
            
               ‘Tread’ means that part of a pneumatic tyre which comes into contact with the ground, protects the carcass against mechanical damage and contributes to ground adhesion (2);
            
         
               2.9.
            
            
               ‘Sidewall’ means the part of a pneumatic tyre between the tread and the area designed to be covered by the rim flange (2);
            
         
               2.10.
            
            
               ‘Lower sidewall’ means the area included between the line of maximum section width of the tyre and the area designed to be covered by the rim flange (2);
               
                           2.10.1.
                        
                        
                           However, in case of tyres identified by the ‘tyre to rim fitment configuration’ (see paragraph 3.1.11) symbol ‘A’, it means the area of the tyre which is seating on the rim.
                        
                     
         
               2.11.
            
            
               ‘Tread groove’ means the space between two adjacent ribs and/or blocks in the tread pattern (2);
            
         
               2.12.
            
            
               ‘Section width (S)’ means the linear distance between the outsides of the sidewalls of an inflated pneumatic tyre, excluding elevations due to labelling (marking), decoration or protective bands or ribs (2);
            
         
               2.13.
            
            
               ‘Over-all width’ means the linear distance between the outsides of the sidewalls of an inflated pneumatic tyre, including labelling (marking), decoration and protective bands or ribs (2);
            
         
               2.14.
            
            
               ‘Section height (H)’ means a distance equal to half the difference between the outer diameter of the tyre and the nominal rim diameter;
            
         
               2.15.
            
            
               ‘Nominal aspect ratio (Ra)’ means one hundred times the number obtained by dividing the number expressing the section height (H) by the number expressing the nominal section width (S1), both dimensions expressed in the same units;
            
         
               2.16.
            
            
               ‘Outer diameter (D)’ means the overall diameter of an inflated new pneumatic tyre (2);
            
         
               2.17.
            
            
               ‘Tyre-size designation’ means:
               
                           2.17.1.
                        
                        
                           A designation showing:
                           
                                       2.17.1.1.
                                    
                                    
                                       The nominal section width (S1). This width must be expressed in mm, except in the case of types of tyre for which the size designation is shown in the first column of the tables in Annex V to this Regulation;
                                    
                                 
                                       2.17.1.2.
                                    
                                    
                                       The nominal aspect ratio, except in the case of certain types of tyre for which the size designation is shown in the first column of the tables in Annex V to this Regulation or, depending on the tyre design type, the nominal outer diameter expressed in mm;
                                    
                                 
                                       2.17.1.3.
                                    
                                    
                                       A conventional number ‘d’ (the ‘d’ symbol) denoting the nominal diameter of the rim and corresponding to its diameter expressed either in codes (number below 100) or in millimetres (numbers above 100). Numbers corresponding to both types of measurement may be used together in the designation;
                                       
                                                   2.17.1.3.1.
                                                
                                                
                                                   The values of the ‘d’ symbols expressed in millimetres are shown below:
                                                   
                                                               Nominal rim diameter code (‘d’ symbol)
                                                            
                                                            
                                                               Value of the ‘d’ symbol expressed in mm
                                                            
                                                         
                                                               8
                                                            
                                                            
                                                               203
                                                            
                                                         
                                                               9
                                                            
                                                            
                                                               229
                                                            
                                                         
                                                               10
                                                            
                                                            
                                                               254
                                                            
                                                         
                                                               11
                                                            
                                                            
                                                               279
                                                            
                                                         
                                                               12
                                                            
                                                            
                                                               305
                                                            
                                                         
                                                               13
                                                            
                                                            
                                                               330
                                                            
                                                         
                                                               14
                                                            
                                                            
                                                               356
                                                            
                                                         
                                                               15
                                                            
                                                            
                                                               381
                                                            
                                                         
                                                               16
                                                            
                                                            
                                                               406
                                                            
                                                         
                                                               17
                                                            
                                                            
                                                               432
                                                            
                                                         
                                                               18
                                                            
                                                            
                                                               457
                                                            
                                                         
                                                               19
                                                            
                                                            
                                                               482
                                                            
                                                         
                                                               20
                                                            
                                                            
                                                               508
                                                            
                                                         
                                                               21
                                                            
                                                            
                                                               533
                                                            
                                                         
                                                               22
                                                            
                                                            
                                                               559
                                                            
                                                         
                                                               24
                                                            
                                                            
                                                               610
                                                            
                                                         
                                                               25
                                                            
                                                            
                                                               635
                                                            
                                                         
                                                               14,5
                                                            
                                                            
                                                               368
                                                            
                                                         
                                                               16,5
                                                            
                                                            
                                                               419
                                                            
                                                         
                                                               17,5
                                                            
                                                            
                                                               445
                                                            
                                                         
                                                               19,5
                                                            
                                                            
                                                               495
                                                            
                                                         
                                                               20,5
                                                            
                                                            
                                                               521
                                                            
                                                         
                                                               22,5
                                                            
                                                            
                                                               572
                                                            
                                                         
                                                               24,5
                                                            
                                                            
                                                               622
                                                            
                                                         
                                                               26
                                                            
                                                            
                                                               660
                                                            
                                                         
                                                               28
                                                            
                                                            
                                                               711
                                                            
                                                         
                                                               30
                                                            
                                                            
                                                               762
                                                            
                                                         
                                             
                                 
                                       2.17.1.4.
                                    
                                    
                                       An indication of the tyre to rim fitment configuration when it differs from the standard configuration and is not already expressed by the symbol ‘d’ denoting the nominal rim diameter code.
                                    
                                 
                     
         
               2.18.
            
            
               ‘Nominal rim diameter (d)’ means the diameter of the rim on which a tyre is designed to be mounted (2);
            
         
               2.19.
            
            
               ‘Rim’ means the support for a tyre-and-tube assembly, or for a tubeless tyre, on which support the tyre beads are seated (2);
            
         
               2.20.
            
            
               ‘Theoretical rim’ means a rim whose width would be equal to x times the nominal section width of a tyre; the value of x shall be specified by the manufacturer of the type;
            
         
               2.21.
            
            
               ‘Measuring rim’ means the rim on which a tyre must be fitted for dimensional measurements;
            
         
               2.22.
            
            
               ‘Test rim’ means the rim on which a tyre must be fitted for load/speed endurance testing;
            
         
               2.23.
            
            
               ‘Chunking’ means the breaking away of pieces of rubber from the tread;
            
         
               2.24.
            
            
               ‘Cord separation’ means the parting of the cords from their coating;
            
         
               2.25.
            
            
               ‘Ply separation’ means the parting of adjacent plies;
            
         
               2.26.
            
            
               ‘Tread separation’ means the pulling away of the tread from the carcass;
            
         
               2.27.
            
            
               ‘Load-capacity index’ means one or two numbers which indicate the load the tyre can carry in single or in single and dual operation at the speed corresponding to the associated speed category and when operated in conformity with the requirements governing utilization specified by the manufacturer. A type of pneumatic tyre can have either one or two sets of load capacity indices depending on whether or not the provisions of paragraph 6.2.5 are applied. The list of these indices and their corresponding loads is given in Annex IV;
            
         
               2.28.
            
            
               ‘Speed category’ means:
               
                           2.28.1.
                        
                        
                           The speeds, indicated by a symbol, at which the tyre can carry the load indicated by the associated load-capacity index;
                        
                     
                           2.28.2.
                        
                        
                           The speed categories are as shown in the table below (3):
                           
                                       Speed-category symbol
                                    
                                    
                                       Corresponding speed (km/h)
                                    
                                 
                                       F
                                    
                                    
                                       80
                                    
                                 
                                       G
                                    
                                    
                                       90
                                    
                                 
                                       J
                                    
                                    
                                       100
                                    
                                 
                                       K
                                    
                                    
                                       110
                                    
                                 
                                       L
                                    
                                    
                                       120
                                    
                                 
                                       M
                                    
                                    
                                       130
                                    
                                 
                                       N
                                    
                                    
                                       140
                                    
                                 
                                       P
                                    
                                    
                                       150
                                    
                                 
                                       Q
                                    
                                    
                                       160
                                    
                                 
                                       R
                                    
                                    
                                       170
                                    
                                 
                                       S
                                    
                                    
                                       180
                                    
                                 
                                       T
                                    
                                    
                                       190
                                    
                                 
                                       U
                                    
                                    
                                       200
                                    
                                 
                                       H
                                    
                                    
                                       210
                                    
                                 
                     
         
               2.29.
            
            
               ‘Table load-capacity variation with speed’ means:
               The table, in Annex VIII, showing as a function of the load-capacity indices and nominal-speed-category symbols the load variations which a pneumatic tyre can withstand when used at speeds different from that conforming to its nominal-speed-category symbol. The load variations do not apply in the case of the additional load capacity symbol and speed category obtained when the provisions of paragraph 6.2.5 are applied.
            
         3.   MARKINGS
   3.1.   Pneumatic tyres submitted for approval shall display on both sidewalls in the case of symmetrical tyres and at least on the outer sidewall in the case of asymmetrical tyres:
   
               3.1.1.
            
            
               The manufacturer's name or trade mark;
            
         
               3.1.2.
            
            
               The tyre-size designation as defined in paragraph 2.17 of this Regulation;
            
         
               3.1.3.
            
            
               An indication of the structure as follows:
               
                           3.1.3.1.
                        
                        
                           On diagonal (bias-ply) tyres: no indication, or the letter ‘D’;
                        
                     
                           3.1.3.2.
                        
                        
                           On radial-ply tyres: the letter ‘R’ placed in front of the rim-diameter marking and, optionally, the word ‘RADIAL’;
                        
                     
         
               3.1.4.
            
            
               The speed-category symbol (or symbols);
               
                           3.1.4.1.
                        
                        
                           An indication of the tyre's nominal speed category in the form of the symbol prescribed in paragraph 2.28.2 above;
                        
                     
                           3.1.4.2.
                        
                        
                           An indication of a second speed category in cases where paragraph 6.2.5 below is applied;
                        
                     
         
               3.1.5.
            
            
               The inscription M+S or M.S or M&S in the case of a snow tyre;
            
         
               3.1.6.
            
            
               The load-capacity indices as defined in paragraph 2.27 of this Regulation;
            
         
               3.1.7.
            
            
               The word ‘TUBELESS’ if the tyre is designed for use without an inner tube;
            
         
               3.1.8.
            
            
               The date of manufacture in the form of a group of four digits, the first two showing the week and the last two the year of manufacture. However, this marking, which it is permissible to restrict to one sidewall, shall not be mandatory, on any tyre submitted for approval, until two years after the date of entry into force of this Regulation (4);
            
         
               3.1.9.
            
            In the case of tyres which can be regrooved, the symbol ‘
                  ’ at least 20 mm in diameter, or the word ‘REGROOVABLE’, moulded into or on to each sidewall;
         
               3.1.10.
            
            
               An indication, by the ‘PSI’ index, of the inflation pressure to be adopted for the load/speed endurance tests, as explained in Annex VII, Appendix 2. However, this indication, which it is permissible to restrict to one sidewall, shall not be mandatory, on any tyre submitted for approval, until two years after the date of entry into force of this Regulation.
            
         
               3.1.11.
            
            
               In the case of tyres first approved after 1 March 2004 the identification referred to in paragraph 2.17.1.4 shall be placed only immediately after the rim diameter marking referred to in paragraph 2.17.1.3.
            
         
               3.1.12.
            
            
               The inscription ‘ET’ or ‘ML’ or ‘MPT’ for ‘Special use tyres’ (5).
            
         
               3.1.13.
            
            
               The suffix ‘C’ or ‘LT’ after the rim diameter marking referred to in paragraph 2.17.1.3, and, if applicable, after the tyre to rim fitment configuration referred to in paragraph 2.17.1.4:
               
                           3.1.13.1.
                        
                        
                           this marking is optional in the case of tyres fitted on 5 ° drop centre rims, suitable for single and dual fitment, having a load capacity index in single lower or equal to 121 and destined for the equipment of motor vehicles.
                        
                     
                           3.1.13.2.
                        
                        
                           this marking is mandatory in the case of tyres fitted on 5 ° drop centre rims, suitable for single fitment only, having a load capacity index higher or equal to 122 and destined for the equipment of motor vehicles.
                        
                     
         
               3.1.14.
            
            
               The suffix ‘CP’ after the rim diameter marking referred to in paragraph 2.17.1.3, and, if applicable, after the tyre to rim fitment configuration referred to in paragraph 2.17.1.4. This marking is mandatory in the case of tyres fitted on 5 ° drop centre rims, having a load capacity index in single lower or equal to 121 and specifically designed for the equipment of motor caravans.
            
         
               3.1.15.
            
            
               The inscription ‘FRT’ (Free Rolling Tyre) in case of tyres designed for the equipment of trailer axles and axles of motor vehicles other than front steering and drive axles.
            
         3.2.   Tyres shall exhibit a free space sufficiently large to accommodate an approval mark as shown in Annex II to this Regulation.
   3.3.   Annex III to this Regulation gives an example of an arrangement of the tyre markings.
   3.4.   The markings referred to in paragraph 3.1 and the approval mark prescribed in paragraph 5.4 of this Regulation shall be moulded on to or into the tyres. They shall be clearly legible and shall, except for the marking referred to in paragraph 3.1.1 above, be located on at least one lower sidewall.
   3.4.1.   However, for tyres identified by the ‘tyre to rim fitment configuration’ (see paragraph 3.1.11) symbol ‘A’, the markings may be placed anywhere on the sidewall of the tyre.
   4.   APPLICATION FOR APPROVAL
   4.1.   The application for approval of a type of pneumatic tyre shall be submitted by the holder of the manufacturer's name or trade mark or by his duly accredited representative. It shall specify:
   
               4.1.1.
            
            
               The tyre-size designation as defined in paragraph 2.17 of this Regulation;
            
         
               4.1.2.
            
            
               The manufacturer's name or trade mark;
            
         
               4.1.3.
            
            
               The category of use (normal or special or snow);
            
         
               4.1.4.
            
            
               Structure: diagonal (bias ply) or radial;
            
         
               4.1.5.
            
            
               The speed category;
            
         
               4.1.6.
            
            
               The load-capacity indices;
            
         
               4.1.7.
            
            
               Whether the tyre is intended to be used with or without an inner tube;
            
         
               4.1.8.
            
            
               The overall dimensions: overall section width and outer diameter;
            
         
               4.1.9.
            
            
               The factor ‘x’ referred to in paragraph 2.20 above;
            
         
               4.1.10.
            
            
               The rims on which the tyre can be mounted;
            
         
               4.1.11.
            
            
               The measuring rim and test rim;
            
         
               4.1.12.
            
            
               The measuring pressure and test pressure index;
            
         
               4.1.13.
            
            
               The additional load/speed combinations in cases where paragraph 6.2.5 below is applied.
            
         4.2.   The application for approval shall be accompanied (all in triplicate) by a sketch, or a representative photograph, which identify the tyre tread pattern and a sketch of the envelope of the inflated tyre mounted on the measuring rim showing the relevant dimensions (see paragraphs 6.1.1 and 6.1.2) of the type submitted for approval. It shall also be accompanied either by the test report issued by the approved test laboratory or by one or two samples of the tyre type, at the discretion of the competent authority. Drawings or photographs of the side wall and tread of the tyre shall be submitted once production has been established, no later than one year after the date of issue of the type approval.
   4.3.   The competent authority shall verify the existence of satisfactory arrangements for ensuring effective control of the conformity of production before type approval is granted.
   4.4.   Where a tyre manufacturer submits application for type approval for a range of tyres, it is not considered necessary to carry out a load/speed test on every type of tyre in the range. Worst case selection may be made at the discretion of the approval authority.
   5.   APPROVAL
   5.1.   If the type of pneumatic tyre submitted for approval in pursuance of this Regulation meets the requirements of paragraph 6 below, approval of that type of tyre shall be granted.
   5.2.   An approval number shall be assigned to each type approved; its first two digits (at present 00 for the Regulation in its original form) shall indicate the series of amendments incorporating the most recent major technical amendments made to the Regulation at the time of issue of the approval. The same Contracting Party may not assign the same number to another type of pneumatic tyre.
   5.3.   Notice of approval or of refusal of approval of a type of pneumatic tyre pursuant to this Regulation shall be communicated to the Parties to the Agreement which apply this Regulation by means of a form conforming to the model in Annex I to this Regulation.
   5.4.   There shall be affixed, conspicuously, to every pneumatic tyre conforming to a type of tyre approved under this Regulation, in the space referred to in paragraph 3.2 above and in addition to the markings prescribed in paragraph 3.1 above, an international approval mark consisting of:
   
               5.4.1.
            
            
               a circle surrounding the letter ‘E’ followed by the distinguishing number of the country which has granted approval (6); and
            
         
               5.4.2.
            
            
               an approval number.
            
         5.5.   The approval mark shall be clearly legible and be indelible.
   5.6.   Annex II to this Regulation gives an example of the arrangement of the approval mark.
   5.7.   Subsequent retreading in accordance with Regulation No 109.
   In the case where, during the course of production of a particular tyre type, the manufacturer has obtained a new approval for that same tyre type to be marked with a service description indicating a higher load index or different speed symbol than the earlier marking and where the tyre manufacturer authorizes the earlier tyre type to be retreaded and marked with the later service description, the tyre manufacturer shall complete the Communication document given in annex IX to this Regulation and shall submit this to the type approval authority that has granted the new approval. If the authorization for upgrading only applies to tyres from a particular manufacturing plant, or produced during particular production periods, the information necessary to identify the tyres shall be stated on the Communication document.
   The type approval authority shall communicate this information to other Parties to the Agreement which apply this Regulation and tyre manufacturers or type approval authorities shall release this information on the request of any retreading production unit that is approved in accordance with ‘Regulation No 109.’
   6.   SPECIFICATIONS
   6.1.   Dimensions of tyres
   6.1.1.   Section width of a tyre
   6.1.1.1.   The section width shall be obtained by means of the following formula:
   S = S1 + K (A – A1),
   where:
   
               S
            
            
               =
            
            
               is the ‘section width’ expressed in millimetres and measured on the measuring rim;
            
         
               S1
               
            
            
               =
            
            
               is ‘the nominal section width’ in millimetres, as shown on the sidewall of the tyre in the tyre designation as prescribed;
            
         
               A
            
            
               =
            
            
               is the width of the measuring rim in millimetres, as shown by the manufacturer in the descriptive note; and
            
         
               A1
               
            
            
               =
            
            
               is the width of the theoretical rim in millimetres.
            
         A1 shall be taken to equal S1 multiplied by the factor x as specified by the manufacturer, and K shall be taken to equal 0.4.
   6.1.1.2.   However, for the existing types of tyres whose designation is given in the first column of the tables in Annex V to this Regulation, the section width shall be deemed to be that given opposite the tyre designation in those tables.
   6.1.1.3.   However, for tyres identified by the ‘tyre to rim fitment configuration’ (see paragraph 3.1.11) symbol ‘A’, K shall be taken to equal 0.6.
   6.1.2.   Outer diameter of a tyre
   6.1.2.1.   The outer diameter of a tyre shall be obtained by means of the following formula:
   D = d + 2H
   where:
   
               D
            
            
               is the outer diameter expressed in millimetres;
            
         
               d
            
            
               is the conventional number defined in paragraph 2.17.1.3 above, expressed in millimetres;
            
         
               S1
               
            
            
               is the nominal section width in millimetres;
            
         
               Ra
            
            
               is the nominal aspect ratio;
            
         
               H
            
            
               is the nominal section height in millimetres and is equal to S1 × 0,01 Ra.
            
         All as in the tyre designation shown on the sidewall of the tyre in conformity with the requirements of paragraph 3.4 above.
   6.1.2.2.   However, for the existing types of tyres whose designation is given in the first column of the tables in Annex V to this Regulation, the outer diameter shall be deemed to be that given opposite the tyre designation in those tables.
   6.1.2.3.   However, for tyres identified by the ‘tyre to rim fitment configuration’ (see paragraph 3.1.11) symbol ‘A’, the outer diameter shall be that specified in the tyre size designation as shown on the sidewall of the tyre.
   6.1.3.   Method of measuring pneumatic tyres
   The dimensions of pneumatic tyres shall be measured by the procedure described in annex VI to this Regulation.
   6.1.4.   Tyre section width specifications
   6.1.4.1.   The overall width of a tyre may be less than the section width or widths determined pursuant to paragraph 6.1.1 above.
   6.1.4.2.   It may exceed that value by 4 per cent in case of radial-ply tyres and by 8 per cent in the case of diagonal (bias-ply) tyres. However, for tyres with nominal section width exceeding 305 mm intended for dual mounting (twinning), the value determined pursuant to paragraph 6.1.1 above shall not be exceeded by more than 2 per cent for radial-ply tyres with nominal aspect ratio higher than 60, or 4 per cent for diagonal (bias-ply) tyres.
   6.1.4.3.   However, for tyres identified by the ‘tyre to rim fitment configuration’ (see paragraph 3.1.11) symbol ‘A’, the overall width of the tyre, in the lower area of the tyre, equals the nominal width of the rim on which the tyre is mounted, as shown by the manufacturer in the descriptive note, increased by 27 mm.
   6.1.5.   Tyre outer diameter specifications
   The outer diameter of a tyre must not be outside the values Dmin and Dmax obtained from the following formulae:
   
                
            
            
               Dmin = d + (2H × a)
            
         
                
            
            
               Dmax = d + (2H × b)
            
         where:
   
               6.1.5.1.
            
            
               For sizes listed in Annex V and for tyres identified by the ‘tyre to rim fitment configuration’ (see paragraph 3.1.11) symbol ‘A’, the nominal section height H is equal to:
               H = 0.5 (D-d) — for references see paragraph 6.1.2.1.
            
         
               6.1.5.2.
            
            
               For other sizes, not listed in Annex V
               ‘H’ and ‘d’ are as defined in paragraph 6.1.2.1.
            
         
               6.1.5.3.
            
            
               Coefficients ‘a’ and ‘b’ are respectively:
               
                           6.1.5.3.1.
                        
                        
                           Coefficient ‘a’ =.97
                        
                     
                           6.1.5.3.2.
                        
                        
                           Coefficient ‘b’
                           
                                        
                                    
                                    
                                       Radial
                                    
                                    
                                       Diagonal
                                    
                                 
                                       for normal use tyres
                                    
                                    
                                       1,04
                                    
                                    
                                       1,07
                                    
                                 
                                       for special use tyres
                                    
                                    
                                       1,06
                                    
                                    
                                       1,09
                                    
                                 
                     
                           6.1.5.3.3.
                        
                        
                           For snow tyres the outer diameter (Dmax) established in conformity with the above may be exceeded by 1 per cent.
                        
                     
         6.2.   Load/speed endurance test
   6.2.1.   Each type of pneumatic tyre shall undergo at least one load/speed endurance tests carried out by the procedure described in Annex VII to this Regulation.
   6.2.2.   A tyre which, after undergoing the endurance test, does not exhibit any tread separation, ply separation, cord separation, chunking or broken cords shall be deemed to have passed the test.
   6.2.3.   The outer diameter of the tyre, measured six hours after the load/speed endurance test, must not differ by more than ± 3,5 per cent from the outer diameter as measured before the test.
   6.2.4.   Where application is made for the approval of a type of pneumatic tyre for the load/speed combinations given in the table in Annex VIII, the endurance test prescribed in paragraph 6.2.1 above need not be carried out for load and speed values other than the nominal values.
   6.2.5.   Where application is made for the approval of a type of pneumatic tyre which has a load/speed combination in addition to the one that is subject to the variation of load with speed given in the table in Annex VIII, the endurance test prescribed in paragraph 6.2.1 above shall also be carried out on a second tyre of the same type at the additional load/speed combination.
   7.   MODIFICATION AND EXTENSION OF APPROVAL OF A TYRE TYPE
   7.1.   Every modification of a tyre type shall be notified to the administrative department which approved the tyre type. That department may then either:
   
               7.1.1.
            
            
               Consider that the modifications made are unlikely to have an appreciable adverse effect and that in any case the tyre still meets the requirements; or
            
         
               7.1.2.
            
            
               Require a further test report from the technical service responsible for carrying out the tests.
            
         7.2.   A modification of the tread pattern of the tyre shall not be considered to necessitate a repetition of the tests prescribed in paragraph 6 of this Regulation.
   7.3.   Confirmation or refusal of approval, specifying the alterations, shall be communicated by the procedure specified in paragraph 5.3 above to the Parties to the Agreement which apply this Regulation.
   7.4.   The competent authority issuing the extension of approval shall assign a series number for such an extension and inform thereof the other Parties to the 1958 Agreement applying this Regulation by means of a communication form conforming to the model in Annex I to this Regulation.
   8.   CONFORMITY OF PRODUCTION
   The conformity of production procedures shall comply with those set out in the Agreement, Appendix 2 (E/ECE/324-E/ECE/TRANS/505/Rev. 2), with the following requirements:
   
               8.1.
            
            
               Tyres approved under this Regulation shall be so manufactured as to conform to the type approved, by meeting the requirements set forth in paragraph 6 above.
            
         
               8.2.
            
            
               The authority which has granted type approval may at any time verify the conformity control methods applied in each production facility. For each production facility, the normal frequency of these verifications shall be once every two years.
            
         9.   PENALTIES FOR NON-CONFORMITY OF PRODUCTION
   9.1.   The approval granted in respect of a type of pneumatic tyre pursuant to this Regulation may be withdrawn if the requirement laid down in paragraph 8.1 above is not complied with or if the tyres taken from the series have failed to pass the tests prescribed in that paragraph.
   9.2.   If a Party to the Agreement which applies this Regulation withdraws an approval it has previously granted, it shall forthwith so notify the other Contracting Parties applying this Regulation, by means of a communication form conforming to the model in Annex I to this Regulation.
   10.   PRODUCTION DEFINITELY DISCONTINUED
   If the holder of an approval completely ceases to manufacture a type of pneumatic tyre approved in accordance with this Regulation, he shall so inform the authority which granted the approval. Upon receiving the relevant communication that authority shall inform thereof the other Parties to the 1958 Agreement applying this Regulation by means of copies of the communication form conforming to the model in Annex I to this Regulation.
   11.   NAMES AND ADDRESSES OF TECHNICAL SERVICES RESPONSIBLE FOR CONDUCTING APPROVAL TESTS, AND OF ADMINISTRATIVE DEPARTMENTS
   11.1.   The Parties to the Agreement which apply this Regulation shall communicate to the United Nations Secretariat the names and addresses of the technical services responsible for conducting approval tests and, where applicable, of the approved test laboratories and of the administrative departments which grant approval and to which forms certifying approval or refusal or withdrawal of approval, issued in other countries, are to be sent.
   11.2.   The Parties to the Agreement which apply this Regulation may use laboratories of tyre manufacturers and may designate, as approved test laboratories, those among them which are situated on their territory or on the territory of another Party to the Agreement subject to a preliminary agreement to this procedure by the competent administrative department of the latter.
   11.3.   Where a Party to the Agreement applies paragraph 11.2 above, it may, if it so desires, be represented at the tests by one or more persons of its choice.
   
      Explanatory figure
   
   (See paragraph 2 of the Regulation)
   
      
   
      (1)  As defined in the Consolidated Resolution on the Construction of Vehicles (R.E.3) (document TRANS/WP.29/78/Rev.1).
   
      (2)  See explanatory figure.
   
      (3)  For consistency, the symbols and speeds shown in this table are the same as those for passenger cars (as in Regulation No 30). They should not be taken to indicate the speeds at which commercial vehicles fitted with such tyres may be operated on the roads.
   
      (4)  Before 1 January 2000, the date of manufacture may be indicated by a group of three digits, the first two showing the week and the last one the year of manufacture.
   
      (5)  This marking shall only be mandatory for tyre types approved to this Regulation after the entry into force of Supplement 14 to the Regulation.
   
      (6)  1 for Germany, 2 for France, 3 for Italy, 4 for the Netherlands, 5 for Sweden, 6 for Belgium, 7 for Hungary, 8 for the Czech Republic, 9 for Spain, 10 for Serbia and Montenegro, 11 for the United Kingdom, 12 for Austria, 13 for Luxembourg, 14 for Switzerland, 15 (vacant), 16 for Norway, 17 for Finland, 18 for Denmark, 19 for Romania, 20 for Poland, 21 for Portugal, 22 for the Russian Federation, 23 for Greece, 24 for Ireland, 25 for Croatia, 26 for Slovenia, 27 for Slovakia, 28 for Belarus, 29 for Estonia, 30 (vacant), 31 for Bosnia and Herzegovina, 32 for Latvia, 33 (vacant), 34 for Bulgaria, 35 (vacant), 36 for Lithuania, 37 for Turkey, 38 (vacant), 39 for Azerbaijan, 40 for The former Yugoslav Republic of Macedonia, 41 (vacant), 42 for the European Community (Approvals are granted by its Member States using their respective ECE symbol), 43 for Japan, 44 (vacant), 45 for Australia, 46 for Ukraine, 47 for South Africa and 48 for New Zealand. Subsequent numbers shall be assigned to other countries in the chronological order in which they ratify or accede to the Agreement Concerning the Adoption of Uniform Technical Prescriptions for Wheeled Vehicles, Equipment and Parts which can be Fitted and/or be Used on Wheeled Vehicles and the Conditions for Reciprocal Recognition of Approvals Granted on the Basis of these Prescriptions, and the numbers thus assigned shall be communicated by the Secretary-General of the United Nations to the Contracting Parties to the Agreement.
   
      ANNEX I
      COMMUNICATION
      (Maximum format: A4 (210 × 297 mm))
      
         
   
   
      ANNEX II
      ARRANGEMENT OF APPROVAL MARK
      
         
      The above approval mark affixed to a pneumatic tyre shows that the type of tyre concerned has been approved in the Netherlands (E 4) under approval number 002439. The first two digits of the approval number indicate that the approval was granted in accordance with the requirements of Regulation No 54 in its original form.
      Note:
      The approval number must be placed close to the circle and either above or below the ‘E’ or to left or right of that letter. The digits of the approval number must be on the same side of the ‘E’ and face in the same direction. The use of Roman numerals as approval numbers should be avoided so as to prevent any confusion with other symbols.
   
   
      ANNEX III
      Arrangement of tyre markings
      
         
      
                   
               
               
                  Minimum heights of markings
                  (mm)
               
            
                  Tyres of nominal rim diameter < 508 mm (Code 20) or of nominal section width ≤ 235 mm (Code 9)
               
               
                  Tyres of nominal rim diameter ≥ 508 mm (Code 20) or of nominal section width > 235 mm (Code 9)
               
            
                  B
               
               
                  6
               
               
                  9
               
            
                  C
               
               
                  4
               
            
                  D
               
               
                  6
               
            1.   These markings, given as an example, define a pneumatic tyre:
      
                   
               
               
                  Having a nominal section width of 255;
               
            
                   
               
               
                  Having a nominal aspect ratio of 70;
               
            
                   
               
               
                  Of radial-ply structure (R);
               
            
                   
               
               
                  Having a nominal rim diameter of 572 mm, for which the symbol is 22.5;
               
            
                   
               
               
                  Having load capacities of 3 150 kg when single and 2 900 kg when twinned (dual), corresponding respectively to the load indices 148 and 145 shown in Annex IV to this Regulation;
               
            
                   
               
               
                  Having a reference speed of 100 km/h corresponding to speed category symbol: J
               
            
                   
               
               
                  Classified in the category of use Snow: M + S
               
            
                   
               
               
                  Able to be used additionally at 120 km/h (speed category symbol L) with a load capacity of 3 000 kg when single and 2 725 kg when twinned (dual), corresponding respectively to the load indices 145 and 143 shown in Annex IV to this Regulation
               
            
                   
               
               
                  Capable of being fitted without inner tube: ‘TUBELESS’
               
            
                   
               
               
                  Manufactured during the twenty-fifth week of the year 2003, and
               
            
                   
               
               
                  Requiring to be inflated to 620 kPa for load/speed endurance tests, for which the PSI symbol is 90.
               
            2.   In the particular case of tyres having a tyre to rim fitment configuration ‘A’, the marking shall be in the form of the following example:
      235-700 R 450A where:
      
                   
               
               
                  235 is the nominal section width in mm
               
            
                   
               
               
                  700 is the outer diameter expressed in mm
               
            
                   
               
               
                  R is an indication of the structure of the tyre — see paragraph 3.1.3. of this Regulation
               
            
                   
               
               
                  450 is the nominal diameter of the rim expressed in mm
               
            
                   
               
               
                  A is the tyre to rim fitment configuration.
               
            The marking of the load index, speed category symbol, date of manufacture and other markings, shall be as given in example 1 above.
      3.   The positioning and order of the markings constituting the tyre designation shall be the following:
      
                  (a)
               
               
                  The tyre-size designation as defined in paragraph 2.17. of this Regulation shall be grouped as shown in above examples: 255/70 R 22.5 or 235-700 R 450A;
               
            
                  (b)
               
               
                  The service description comprising the load index/indices and the speed symbol shall be placed immediately after the tyre size designation as defined in paragraph 2.17 of this Regulation;
               
            
                  (c)
               
               
                  The symbols ‘TUBELESS’ and ‘M+S’ or ‘FRT’ or ‘MPT’ (and equivalents) may be at a distance from the tyre size designation;
               
            
                  (d)
               
               
                  If paragraph 6.2.5. of this Regulation is applied, the additional load-capacity indices and speed-category symbol must be shown inside a circle near the nominal load-capacity indices and speed-category-symbol appearing on the tyre sidewall.
               
            
   
      ANNEX IV
      List of symbols of load-capacity indices
      
                  Load-capacity index
               
               
                  Corresponding maximum mass to be carried (kg)
               
            
                  60
               
               
                  250
               
            
                  61
               
               
                  257
               
            
                  62
               
               
                  265
               
            
                  63
               
               
                  272
               
            
                  64
               
               
                  280
               
            
                  65
               
               
                  290
               
            
                  66
               
               
                  300
               
            
                  67
               
               
                  307
               
            
                  68
               
               
                  315
               
            
                  69
               
               
                  325
               
            
                  70
               
               
                  335
               
            
                  71
               
               
                  345
               
            
                  72
               
               
                  355
               
            
                  73
               
               
                  365
               
            
                  74
               
               
                  375
               
            
                  75
               
               
                  387
               
            
                  76
               
               
                  400
               
            
                  77
               
               
                  412
               
            
                  78
               
               
                  425
               
            
                  79
               
               
                  437
               
            
                  80
               
               
                  450
               
            
                  81
               
               
                  462
               
            
                  82
               
               
                  475
               
            
                  83
               
               
                  487
               
            
                  84
               
               
                  500
               
            
                  85
               
               
                  515
               
            
                  86
               
               
                  530
               
            
                  87
               
               
                  545
               
            
                  88
               
               
                  560
               
            
                  89
               
               
                  580
               
            
                  90
               
               
                  600
               
            
                  91
               
               
                  615
               
            
                  92
               
               
                  630
               
            
                  93
               
               
                  650
               
            
                  94
               
               
                  670
               
            
                  95
               
               
                  690
               
            
                  96
               
               
                  710
               
            
                  97
               
               
                  730
               
            
                  98
               
               
                  750
               
            
                  99
               
               
                  775
               
            
                  100
               
               
                  800
               
            
                  101
               
               
                  825
               
            
                  102
               
               
                  850
               
            
                  103
               
               
                  875
               
            
                  104
               
               
                  900
               
            
                  105
               
               
                  925
               
            
                  106
               
               
                  950
               
            
                  107
               
               
                  975
               
            
                  108
               
               
                  1 000
               
            
                  109
               
               
                  1 030
               
            
                  110
               
               
                  1 060
               
            
                  111
               
               
                  1 090
               
            
                  112
               
               
                  1 120
               
            
                  113
               
               
                  1 150
               
            
                  114
               
               
                  1 180
               
            
                  115
               
               
                  1 215
               
            
                  116
               
               
                  1 250
               
            
                  117
               
               
                  1 285
               
            
                  118
               
               
                  1 320
               
            
                  119
               
               
                  1 360
               
            
                  120
               
               
                  1 400
               
            
                  121
               
               
                  1 450
               
            
                  122
               
               
                  1 500
               
            
                  123
               
               
                  1 550
               
            
                  124
               
               
                  1 600
               
            
                  125
               
               
                  1 650
               
            
                  126
               
               
                  1 700
               
            
                  127
               
               
                  1 750
               
            
                  128
               
               
                  1 800
               
            
                  129
               
               
                  1 850
               
            
                  130
               
               
                  1 900
               
            
                  131
               
               
                  1 950
               
            
                  132
               
               
                  2 000
               
            
                  133
               
               
                  2 060
               
            
                  134
               
               
                  2 120
               
            
                  135
               
               
                  2 180
               
            
                  136
               
               
                  2 240
               
            
                  137
               
               
                  2 300
               
            
                  138
               
               
                  2 360
               
            
                  139
               
               
                  2 430
               
            
                  140
               
               
                  2 500
               
            
                  141
               
               
                  2 575
               
            
                  142
               
               
                  2 650
               
            
                  143
               
               
                  2 725
               
            
                  144
               
               
                  2 800
               
            
                  145
               
               
                  2 900
               
            
                  146
               
               
                  3 000
               
            
                  147
               
               
                  3 075
               
            
                  148
               
               
                  3 150
               
            
                  149
               
               
                  3 250
               
            
                  150
               
               
                  3 350
               
            
                  151
               
               
                  3 450
               
            
                  152
               
               
                  3 550
               
            
                  153
               
               
                  3 650
               
            
                  154
               
               
                  3 750
               
            
                  155
               
               
                  3 875
               
            
                  156
               
               
                  4 000
               
            
                  157
               
               
                  4 125
               
            
                  158
               
               
                  4 250
               
            
                  159
               
               
                  4 375
               
            
                  160
               
               
                  4 500
               
            
                  161
               
               
                  4 625
               
            
                  162
               
               
                  4 750
               
            
                  163
               
               
                  4 875
               
            
                  164
               
               
                  5 000
               
            
                  165
               
               
                  5 150
               
            
                  166
               
               
                  5 300
               
            
                  167
               
               
                  5 450
               
            
                  168
               
               
                  5 600
               
            
                  169
               
               
                  5 800
               
            
                  170
               
               
                  6 000
               
            
                  171
               
               
                  6 150
               
            
                  172
               
               
                  6 300
               
            
                  173
               
               
                  6 500
               
            
                  174
               
               
                  6 700
               
            
                  175
               
               
                  6 900
               
            
                  176
               
               
                  7 100
               
            
                  177
               
               
                  7 300
               
            
                  178
               
               
                  7 500
               
            
                  179
               
               
                  7 750
               
            
                  180
               
               
                  8 000
               
            
                  181
               
               
                  8 250
               
            
                  182
               
               
                  8 500
               
            
                  183
               
               
                  8 750
               
            
                  184
               
               
                  9 000
               
            
                  185
               
               
                  9 250
               
            
                  186
               
               
                  9 500
               
            
                  187
               
               
                  9 750
               
            
                  188
               
               
                  10 000
               
            
                  189
               
               
                  10 300
               
            
                  190
               
               
                  10 600
               
            
                  191
               
               
                  10 900
               
            
                  192
               
               
                  11 200
               
            
                  193
               
               
                  11 500
               
            
                  194
               
               
                  11 800
               
            
                  195
               
               
                  12 150
               
            
                  196
               
               
                  12 500
               
            
                  197
               
               
                  12 850
               
            
                  198
               
               
                  13 200
               
            
                  199
               
               
                  13 600
               
            
                  200
               
               
                  14 000
               
            
   
      ANNEX V
      Tyre-size designation and dimensions
      PART I
      EUROPEAN TYRES
      Table A
      Code designated sizes mounted on 5° tapered rims or flat base rims. Radial and diagonal constructions
      
                  Tyre Size Designation (1)
                  
               
               
                  Measuring Rim Width Code
               
               
                  Nominal Rim Diameter d (mm)
               
               
                  Outer Diameter D (mm)
               
               
                  Section Width S (mm)
               
            
                  Radial
               
               
                  Diagonal
               
               
                  Radial
               
               
                  Diagonal
               
            
                  Std. series
               
            
                  4.00R8 (2)
                  
               
               
                  2.50
               
               
                  203
               
               
                  414
               
               
                  414
               
               
                  107
               
               
                  107
               
            
                  4.00R10 (2)
                  
               
               
                  3.00
               
               
                  254
               
               
                  466
               
               
                  466
               
               
                  108
               
               
                  108
               
            
                  4.00R12 (2)
                  
               
               
                  3.00
               
               
                  305
               
               
                  517
               
               
                  517
               
               
                  108
               
               
                  108
               
            
                  4.50R8 (2)
                  
               
               
                  3.50
               
               
                  203
               
               
                  439
               
               
                  439
               
               
                  125
               
               
                  125
               
            
                  4.50R10 (2)
                  
               
               
                  3.50
               
               
                  254
               
               
                  490
               
               
                  490
               
               
                  125
               
               
                  125
               
            
                  4.50R12 (2)
                  
               
               
                  3.50
               
               
                  305
               
               
                  545
               
               
                  545
               
               
                  125
               
               
                  128
               
            
                  5.00R8 (2)
                  
               
               
                  3.00
               
               
                  203
               
               
                  467
               
               
                  467
               
               
                  132
               
               
                  132
               
            
                  5.00R10 (2)
                  
               
               
                  3.50
               
               
                  254
               
               
                  516
               
               
                  516
               
               
                  134
               
               
                  134
               
            
                  5.00R12 (2)
                  
               
               
                  3.50
               
               
                  305
               
               
                  568
               
               
                  568
               
               
                  134
               
               
                  137
               
            
                  6.00R9
               
               
                  4.00
               
               
                  229
               
               
                  540
               
               
                  540
               
               
                  160
               
               
                  160
               
            
                  6.00R14C
               
               
                  4.50
               
               
                  356
               
               
                  626
               
               
                  625
               
               
                  158
               
               
                  158
               
            
                  6.00R16 (2)
                  
               
               
                  4.50
               
               
                  406
               
               
                  728
               
               
                  730
               
               
                  170
               
               
                  170
               
            
                  6.50R10
               
               
                  5.00
               
               
                  254
               
               
                  588
               
               
                  588
               
               
                  177
               
               
                  177
               
            
                  6.50R14C
               
               
                  5.00
               
               
                  356
               
               
                  640
               
               
                  650
               
               
                  170
               
               
                  172
               
            
                  6.50R16 (2)
                  
               
               
                  4.50
               
               
                  406
               
               
                  742
               
               
                  748
               
               
                  176
               
               
                  176
               
            
                  6.50R20 (2)
                  
               
               
                  5.00
               
               
                  508
               
               
                  860
               
               
                  —
               
               
                  181
               
               
                  —
               
            
                  7.00R12
               
               
                  5.00
               
               
                  305
               
               
                  672
               
               
                  672
               
               
                  192
               
               
                  192
               
            
                  7.00R14C
               
               
                  5.00
               
               
                  356
               
               
                  650
               
               
                  668
               
               
                  180
               
               
                  182
               
            
                  7.00R15 (2)
                  
               
               
                  5.00
               
               
                  381
               
               
                  746
               
               
                  752
               
               
                  197
               
               
                  198
               
            
                  7.00R16C
               
               
                  5.50
               
               
                  406
               
               
                  778
               
               
                  778
               
               
                  198
               
               
                  198
               
            
                  7.00R16
               
               
                  5.50
               
               
                  406
               
               
                  784
               
               
                  774
               
               
                  198
               
               
                  198
               
            
                  7.00R20
               
               
                  5.50
               
               
                  508
               
               
                  892
               
               
                  898
               
               
                  198
               
               
                  198
               
            
                  7.50R10
               
               
                  5.50
               
               
                  254
               
               
                  645
               
               
                  645
               
               
                  207
               
               
                  207
               
            
                  7.50R14C
               
               
                  5.50
               
               
                  356
               
               
                  686
               
               
                  692
               
               
                  195
               
               
                  192
               
            
                  7.50R15 (2)
                  
               
               
                  6.00
               
               
                  381
               
               
                  772
               
               
                  772
               
               
                  212
               
               
                  212
               
            
                  7.50R16 (2)
                  
               
               
                  6.00
               
               
                  406
               
               
                  802
               
               
                  806
               
               
                  210
               
               
                  210
               
            
                  7.50R17 (2)
                  
               
               
                  6.00
               
               
                  432
               
               
                  852
               
               
                  852
               
               
                  210
               
               
                  210
               
            
                  7.50R20
               
               
                  6.00
               
               
                  508
               
               
                  928
               
               
                  928
               
               
                  210
               
               
                  213
               
            
                  8.25R15
               
               
                  6.50
               
               
                  381
               
               
                  836
               
               
                  836
               
               
                  230
               
               
                  234
               
            
                  8.25R16
               
               
                  6.50
               
               
                  406
               
               
                  860
               
               
                  860
               
               
                  230
               
               
                  234
               
            
                  8.25R17
               
               
                  6.50
               
               
                  432
               
               
                  886
               
               
                  895
               
               
                  230
               
               
                  234
               
            
                  8.25R20
               
               
                  6.50
               
               
                  508
               
               
                  962
               
               
                  970
               
               
                  230
               
               
                  234
               
            
                  9.00R15
               
               
                  6.00
               
               
                  381
               
               
                  840
               
               
                  840
               
               
                  249
               
               
                  249
               
            
                  9.00R16 (2)
                  
               
               
                  6.50
               
               
                  406
               
               
                  912
               
               
                  900
               
               
                  246
               
               
                  252
               
            
                  9.00R20
               
               
                  7.00
               
               
                  508
               
               
                  1 018
               
               
                  1 012
               
               
                  258
               
               
                  256
               
            
                  10.00R15
               
               
                  7.50
               
               
                  381
               
               
                  918
               
               
                  918
               
               
                  275
               
               
                  275
               
            
                  10.00R20
               
               
                  7.50
               
               
                  508
               
               
                  1 052
               
               
                  1 050
               
               
                  275
               
               
                  275
               
            
                  10.00R22
               
               
                  7.50
               
               
                  559
               
               
                  1 102
               
               
                  1 102
               
               
                  275
               
               
                  275
               
            
                  11.00R16
               
               
                  6.50
               
               
                  406
               
               
                  980
               
               
                  952
               
               
                  279
               
               
                  272
               
            
                  11.00R20
               
               
                  8.00
               
               
                  508
               
               
                  1 082
               
               
                  1 080
               
               
                  286
               
               
                  291
               
            
                  11.00R22
               
               
                  8.00
               
               
                  559
               
               
                  1 132
               
               
                  1 130
               
               
                  286
               
               
                  291
               
            
                  11.00R24
               
               
                  8.00
               
               
                  610
               
               
                  1 182
               
               
                  1 180
               
               
                  286
               
               
                  291
               
            
                  12.00R20
               
               
                  8.50
               
               
                  508
               
               
                  1 122
               
               
                  1 120
               
               
                  313
               
               
                  312
               
            
                  12.00R22
               
               
                  8.50
               
               
                  559
               
               
                  1 174
               
               
                  1 174
               
               
                  313
               
               
                  312
               
            
                  12.00R24
               
               
                  8.50
               
               
                  610
               
               
                  1 226
               
               
                  1 220
               
               
                  313
               
               
                  312
               
            
                  13.00R20
               
               
                  9.00
               
               
                  508
               
               
                  1 176
               
               
                  1 170
               
               
                  336
               
               
                  342
               
            
                  14.00R20
               
               
                  10.00
               
               
                  508
               
               
                  1 238
               
               
                  1 238
               
               
                  370
               
               
                  375
               
            
                  14.00R24
               
               
                  10.00
               
               
                  610
               
               
                  1 340
               
               
                  1 340
               
               
                  370
               
               
                  375
               
            
                  16.00R20
               
               
                  13.00
               
               
                  508
               
               
                  1 370
               
               
                  1 370
               
               
                  446
               
               
                  446
               
            
                  80 Series
               
            
                  12/80 R 20
               
               
                  8.50
               
               
                  508
               
               
                  1 008
               
               
                  —
               
               
                  305
               
               
                  —
               
            
                  13/80 R 20
               
               
                  9.00
               
               
                  508
               
               
                  1 048
               
               
                  —
               
               
                  326
               
               
                  —
               
            
                  14/80 R 20
               
               
                  10.00
               
               
                  508
               
               
                  1 090
               
               
                  —
               
               
                  350
               
               
                  —
               
            
                  14/80 R 24
               
               
                  10.00
               
               
                  610
               
               
                  1 192
               
               
                  —
               
               
                  350
               
               
                  —
               
            
                  14.75/80 R 20
               
               
                  10.00
               
               
                  508
               
               
                  1 124
               
               
                  —
               
               
                  370
               
               
                  —
               
            
                  15.5/80 R 20
               
               
                  10.00
               
               
                  508
               
               
                  1 158
               
               
                  —
               
               
                  384
               
               
                  —
               
            
                  Wide Base Tyres for Multipurpose Trucks
               
            
                  7.50 R 18 MPT
               
               
                  5.50
               
               
                  457
               
               
                  885
               
               
                   
               
               
                  208
               
            
                  10.5 R 18 MPT
               
               
                  9
               
               
                  457
               
               
                  905
               
               
                  276
               
               
                  270
               
            
                  10.5 R 20 MPT
               
               
                  9
               
               
                  508
               
               
                  955
               
               
                  276
               
               
                  270
               
            
                  12.5 R 18 MPT
               
               
                  11
               
               
                  457
               
               
                  990
               
               
                  330
               
               
                  325
               
            
                  12.5 R 20 MPT
               
               
                  11
               
               
                  508
               
               
                  1 040
               
               
                  330
               
               
                  325
               
            
                  14.5 R 20 MPT
               
               
                  11
               
               
                  508
               
               
                  1 095
               
               
                  362
               
               
                  355
               
            
                  14.5 R 24 MPT
               
               
                  11
               
               
                  610
               
               
                  1 195
               
               
                  362
               
               
                  355
               
            
         
      Table B
      Code designated sizes mounted on 15° tapered rims — radial
      
                  Tyre size designation
               
               
                  Measuring rim width code
               
               
                  Nominal rim diameter d (mm)
               
               
                  Outer diameter
                  D (mm)
               
               
                  Section Width
                  S (mm)
               
            
                  7 R 17.5 (3)
                  
               
               
                  5.25
               
               
                  445
               
               
                  752
               
               
                  185
               
            
                  7 R 19.5
               
               
                  5.25
               
               
                  495
               
               
                  800
               
               
                  185
               
            
                  8 R 17.5 (3)
                  
               
               
                  6.00
               
               
                  445
               
               
                  784
               
               
                  208
               
            
                  8 R 19.5
               
               
                  6.00
               
               
                  495
               
               
                  856
               
               
                  208
               
            
                  8 R 22.5
               
               
                  6.00
               
               
                  572
               
               
                  936
               
               
                  208
               
            
                  8.5 R 17.5
               
               
                  6.00
               
               
                  445
               
               
                  802
               
               
                  215
               
            
                  9 R 17.5
               
               
                  6.75
               
               
                  445
               
               
                  820
               
               
                  230
               
            
                  9 R 19.5
               
               
                  6.75
               
               
                  495
               
               
                  894
               
               
                  230
               
            
                  9 R 22.5
               
               
                  6.75
               
               
                  572
               
               
                  970
               
               
                  230
               
            
                  9.5 R 17.5
               
               
                  6.75
               
               
                  445
               
               
                  842
               
               
                  240
               
            
                  9.5 R 19.5
               
               
                  6.75
               
               
                  495
               
               
                  916
               
               
                  240
               
            
                  10 R 17.5
               
               
                  7.50
               
               
                  445
               
               
                  858
               
               
                  254
               
            
                  10 R 19.5
               
               
                  7.50
               
               
                  495
               
               
                  936
               
               
                  254
               
            
                  10 R 22.5
               
               
                  7.50
               
               
                  572
               
               
                  1 020
               
               
                  254
               
            
                  11 R 22.5
               
               
                  8.25
               
               
                  572
               
               
                  1 050
               
               
                  279
               
            
                  11 R 24.5
               
               
                  8.25
               
               
                  622
               
               
                  1 100
               
               
                  279
               
            
                  12 R 22.5
               
               
                  9.00
               
               
                  572
               
               
                  1 084
               
               
                  300
               
            
                  13 R 22.5
               
               
                  9.75
               
               
                  572
               
               
                  1 124
               
               
                  320
               
            
                  15 R 19.5
               
               
                  11.75
               
               
                  495
               
               
                  998
               
               
                  387
               
            
                  15 R 22.5
               
               
                  11.75
               
               
                  572
               
               
                  1 074
               
               
                  387
               
            
                  16.5 R 19.5
               
               
                  13.00
               
               
                  495
               
               
                  1 046
               
               
                  425
               
            
                  16.5 R 22.5
               
               
                  13.00
               
               
                  572
               
               
                  1 122
               
               
                  425
               
            
                  18 R 19.5
               
               
                  14.00
               
               
                  495
               
               
                  1 082
               
               
                  457
               
            
                  18 R 22.5
               
               
                  14.00
               
               
                  572
               
               
                  1 158
               
               
                  457
               
            
                  70 Series
               
            
                  10/70 R 22.5
               
               
                  7.50
               
               
                  572
               
               
                  928
               
               
                  254
               
            
                  11/70 R 22.5
               
               
                  8.25
               
               
                  572
               
               
                  962
               
               
                  279
               
            
                  12/70 R 22.5
               
               
                  9.00
               
               
                  572
               
               
                  1 000
               
               
                  305
               
            
                  13/70 R 22.5
               
               
                  9.75
               
               
                  572
               
               
                  1 033
               
               
                  330
               
            
         
      Table C
      Tyres for light commercial vehicles — radial and diagonal constructions
      
                  Tyre size designation (4)
                  
               
               
                  Measuring rim width code
               
               
                  Nominal rim diameter d (mm)
               
               
                  Outer diameter D (mm)
               
               
                  Section Width S (mm)
               
            
                  Radial
               
               
                  Diagonal
               
               
                  Radial
               
               
                  Diagonal
               
            
                  Metric Designated
               
            
                  145 R 10 C
               
               
                  4.00
               
               
                  254
               
               
                  492
               
               
                  —
               
               
                  147
               
               
                  —
               
            
                  145 R 12 C
               
               
                  4.00
               
               
                  305
               
               
                  542
               
               
                  —
               
               
                  147
               
               
                  —
               
            
                  145 R 13 C
               
               
                  4.00
               
               
                  330
               
               
                  566
               
               
                  —
               
               
                  147
               
               
                  —
               
            
                  145 R 14 C
               
               
                  4.00
               
               
                  356
               
               
                  590
               
               
                  —
               
               
                  147
               
               
                  —
               
            
                  145 R 15 C
               
               
                  4.00
               
               
                  381
               
               
                  616
               
               
                  —
               
               
                  147
               
               
                  —
               
            
                  155 R 12 C
               
               
                  4.50
               
               
                  305
               
               
                  550
               
               
                  —
               
               
                  157
               
               
                  —
               
            
                  155 R 13 C
               
               
                  4.50
               
               
                  330
               
               
                  578
               
               
                  —
               
               
                  157
               
               
                  —
               
            
                  155 R 14 C
               
               
                  4.50
               
               
                  356
               
               
                  604
               
               
                  —
               
               
                  157
               
               
                  —
               
            
                  165 R 13 C
               
               
                  4.50
               
               
                  330
               
               
                  596
               
               
                  —
               
               
                  167
               
               
                  —
               
            
                  165 R 14 C
               
               
                  4.50
               
               
                  356
               
               
                  622
               
               
                  —
               
               
                  167
               
               
                  —
               
            
                  165 R 15 C
               
               
                  4.50
               
               
                  381
               
               
                  646
               
               
                  —
               
               
                  167
               
               
                  —
               
            
                  175 R 13 C
               
               
                  5.00
               
               
                  330
               
               
                  608
               
               
                  —
               
               
                  178
               
               
                  —
               
            
                  175 R 14 C
               
               
                  5.00
               
               
                  356
               
               
                  634
               
               
                  —
               
               
                  178
               
               
                  —
               
            
                  175 R 16 C
               
               
                  5.00
               
               
                  406
               
               
                  684
               
               
                  —
               
               
                  178
               
               
                  —
               
            
                  185 R 13 C
               
               
                  5.50
               
               
                  330
               
               
                  624
               
               
                  —
               
               
                  188
               
               
                  —
               
            
                  185 R 14 C
               
               
                  5.50
               
               
                  356
               
               
                  650
               
               
                  —
               
               
                  188
               
               
                  —
               
            
                  185 R 15 C
               
               
                  5.50
               
               
                  381
               
               
                  674
               
               
                  —
               
               
                  188
               
               
                  —
               
            
                  185 R 16 C
               
               
                  5.50
               
               
                  406
               
               
                  700
               
               
                  —
               
               
                  188
               
               
                  —
               
            
                  195 R 14 C
               
               
                  5.50
               
               
                  356
               
               
                  666
               
               
                  —
               
               
                  198
               
               
                  —
               
            
                  195 R 15 C
               
               
                  5.50
               
               
                  381
               
               
                  690
               
               
                  —
               
               
                  198
               
               
                  —
               
            
                  195 R 16 C
               
               
                  5.50
               
               
                  406
               
               
                  716
               
               
                  —
               
               
                  198
               
               
                  —
               
            
                  205 R 14 C
               
               
                  6.00
               
               
                  356
               
               
                  686
               
               
                  —
               
               
                  208
               
               
                  —
               
            
                  205 R 15 C
               
               
                  6.00
               
               
                  381
               
               
                  710
               
               
                  —
               
               
                  208
               
               
                  —
               
            
                  205 R 16 C
               
               
                  6.00
               
               
                  406
               
               
                  736
               
               
                  —
               
               
                  208
               
               
                  —
               
            
                  215 R 14 C
               
               
                  6.00
               
               
                  356
               
               
                  700
               
               
                  —
               
               
                  218
               
               
                  —
               
            
                  215 R 15 C
               
               
                  6.00
               
               
                  381
               
               
                  724
               
               
                  —
               
               
                  218
               
               
                  —
               
            
                  215 R 16 C
               
               
                  6.00
               
               
                  406
               
               
                  750
               
               
                  —
               
               
                  218
               
               
                  —
               
            
                  245 R 16 C
               
               
                  7.00
               
               
                  406
               
               
                  798
               
               
                  798
               
               
                  248
               
               
                  248
               
            
                  17 R 15 C
               
               
                  5.00
               
               
                  381
               
               
                  678
               
               
                  —
               
               
                  178
               
               
                  —
               
            
                  17 R 380 C
               
               
                  5.00
               
               
                  381
               
               
                  678
               
               
                  —
               
               
                  178
               
               
                  —
               
            
                  17 R 400 C
               
               
                  150 mm
               
               
                  400
               
               
                  698
               
               
                  —
               
               
                  186
               
               
                  —
               
            
                  19 R 400 C
               
               
                  150 mm
               
               
                  400
               
               
                  728
               
               
                  —
               
               
                  200
               
               
                  —
               
            
                  Code Designated
               
            
                  5.60 R 12 C
               
               
                  4.00
               
               
                  305
               
               
                  570
               
               
                  572
               
               
                  150
               
               
                  148
               
            
                  6.40 R 13 C
               
               
                  5.00
               
               
                  330
               
               
                  648
               
               
                  640
               
               
                  172
               
               
                  172
               
            
                  6.70 R 13 C
               
               
                  5.00
               
               
                  330
               
               
                  660
               
               
                  662
               
               
                  180
               
               
                  180
               
            
                  6.70 R 14 C
               
               
                  5.00
               
               
                  356
               
               
                  688
               
               
                  688
               
               
                  180
               
               
                  180
               
            
                  6.70 R 15 C
               
               
                  5.00
               
               
                  381
               
               
                  712
               
               
                  714
               
               
                  180
               
               
                  180
               
            
         
      Table D
      Tyres for special applications — radial and diagonal construction
      
                  Tyre size designation (5)
                  
               
               
                  Measuring rim width code
               
               
                  Nominal rim diameter d (mm)
               
               
                  Outer diameter
                  D (mm)
               
               
                  Section Width
                  S (mm)
               
            
                  Code Designated
               
            
                  15×4 1/2-8
               
               
                  3.25
               
               
                  203
               
               
                  385
               
               
                  122
               
            
                  16×6-8
               
               
                  4.33
               
               
                  203
               
               
                  425
               
               
                  152
               
            
                  18×7
               
               
                  4.33
               
               
                  203
               
               
                  462
               
               
                  173
               
            
                  18×7-8
               
               
                  4.33
               
               
                  203
               
               
                  462
               
               
                  173
               
            
                  21×8-9
               
               
                  6.00
               
               
                  229
               
               
                  535
               
               
                  200
               
            
                  21×4
               
               
                  2.32
               
               
                  330
               
               
                  565
               
               
                  113
               
            
                  22×4 1/2
               
               
                  3.11
               
               
                  330
               
               
                  595
               
               
                  132
               
            
                  23×5
               
               
                  3.75
               
               
                  330
               
               
                  635
               
               
                  155
               
            
                  23×9-10
               
               
                  6.50
               
               
                  254
               
               
                  595
               
               
                  225
               
            
                  25×6
               
               
                  3.75
               
               
                  330
               
               
                  680
               
               
                  170
               
            
                  27×10-12
               
               
                  8.00
               
               
                  305
               
               
                  690
               
               
                  255
               
            
                  28×9-15
               
               
                  7.00
               
               
                  381
               
               
                  707
               
               
                  216
               
            
                  Metric designated
               
            
                  200-15
               
               
                  6.50
               
               
                  381
               
               
                  730
               
               
                  205
               
            
                  250-15
               
               
                  7.50
               
               
                  381
               
               
                  735
               
               
                  250
               
            
                  300-15
               
               
                  8.00
               
               
                  381
               
               
                  840
               
               
                  300
               
            PART II
      UNITED STATES TYRES
      
                  —
               
               
                  Tolerances shown at the bottom of the tables apply in place of those shown in paras. 6.1.4.2. and 6.1.5.3.
               
            
                  —
               
               
                  Outer diameters are listed for the various categories of use: Normal, Snow, Special.
               
            Table A
      Tyres for light commercial vehicles (LT tyres)
      Diagonal and radial
      
                  Tyre size designation (6)
                  
               
               
                  Measuring rim width code
               
               
                  Nominal rim diameter d (mm)
               
               
                  Outer diameter D (mm) (7)
                  
               
               
                  Section width
                  S (mm) (8)
                  
               
            
                  Normal
               
               
                  Snow
               
            
                  6.00-16LT
               
               
                  4.50
               
               
                  406
               
               
                  732
               
               
                  743
               
               
                  173
               
            
                  6.50-16LT
               
               
                  4.50
               
               
                  406
               
               
                  755
               
               
                  767
               
               
                  182
               
            
                  6.70-16LT
               
               
                  5.00
               
               
                  406
               
               
                  722
               
               
                  733
               
               
                  191
               
            
                  7.00-13LT
               
               
                  5.00
               
               
                  330
               
               
                  647
               
               
                  658
               
               
                  187
               
            
                  7.00-14LT
               
               
                  5.00
               
               
                  356
               
               
                  670
               
               
                  681
               
               
                  187
               
            
                  7.00-15LT
               
               
                  5.50
               
               
                  381
               
               
                  752
               
               
                  763
               
               
                  202
               
            
                  7.00-16LT
               
               
                  5.50
               
               
                  406
               
               
                  778
               
               
                  788
               
               
                  202
               
            
                  7.10-15LT
               
               
                  5.00
               
               
                  381
               
               
                  738
               
               
                  749
               
               
                  199
               
            
                  7.50-15LT
               
               
                  6.00
               
               
                  381
               
               
                  782
               
               
                  794
               
               
                  220
               
            
                  7.50-16LT
               
               
                  6.00
               
               
                  406
               
               
                  808
               
               
                  819
               
               
                  220
               
            
                  8.25-16LT
               
               
                  6.50
               
               
                  406
               
               
                  859
               
               
                  869
               
               
                  241
               
            
                  9.00-16LT
               
               
                  6.50
               
               
                  406
               
               
                  890
               
               
                  903
               
               
                  257
               
            
                  G78-15LT
               
               
                  6.00
               
               
                  381
               
               
                  711
               
               
                  722
               
               
                  212
               
            
                  H78-15LT
               
               
                  6.00
               
               
                  381
               
               
                  727
               
               
                  739
               
               
                  222
               
            
                  L78-15LT
               
               
                  6.50
               
               
                  381
               
               
                  749
               
               
                  760
               
               
                  236
               
            
                  L78-16LT
               
               
                  6.50
               
               
                  406
               
               
                  775
               
               
                  786
               
               
                  236
               
            
                  7-14.5LT (9)
                  
               
               
                  6.00
               
               
                  368
               
               
                  677
               
               
                   
               
               
                  185
               
            
                  8-14.5LT (9)
                  
               
               
                  6.00
               
               
                  368
               
               
                  707
               
               
                   
               
               
                  203
               
            
                  9-14.5LT (9)
                  
               
               
                  7.00
               
               
                  368
               
               
                  711
               
               
                   
               
               
                  241
               
            
                  7-17.5LT
               
               
                  5.25
               
               
                  445
               
               
                  758
               
               
                  769
               
               
                  189
               
            
                  8-17.5LT
               
               
                  5.25
               
               
                  445
               
               
                  788
               
               
                  799
               
               
                  199
               
            
         
      Table B
      Tyres for light commercial vehicles (high flotation tyres)
      Diagonal and radial
      
                  Tyre size designation (10)
                  
               
               
                  Measuring rim width code
               
               
                  Nominal rim diameter d (mm)
               
               
                  Outer diameter D (mm) (11)
                  
               
               
                  Section width
                  S (mm) (12)
                  
               
            
                  Normal
               
               
                  Snow
               
            
                  9-15LT
               
               
                  8.00
               
               
                  381
               
               
                  744
               
               
                  755
               
               
                  254
               
            
                  10-15LT
               
               
                  8.00
               
               
                  381
               
               
                  773
               
               
                  783
               
               
                  264
               
            
                  11-15LT
               
               
                  8.00
               
               
                  381
               
               
                  777
               
               
                  788
               
               
                  279
               
            
                  24×7.50-13LT
               
               
                  6
               
               
                  330
               
               
                  597
               
               
                  604
               
               
                  191
               
            
                  27×8.50-14LT
               
               
                  7
               
               
                  356
               
               
                  674
               
               
                  680
               
               
                  218
               
            
                  28×8.50-15LT
               
               
                  7
               
               
                  381
               
               
                  699
               
               
                  705
               
               
                  218
               
            
                  29×9.50-15LT
               
               
                  7.5
               
               
                  381
               
               
                  724
               
               
                  731
               
               
                  240
               
            
                  30×9.50-15LT
               
               
                  7.5
               
               
                  381
               
               
                  750
               
               
                  756
               
               
                  240
               
            
                  31×10.50-15LT
               
               
                  8.5
               
               
                  381
               
               
                  775
               
               
                  781
               
               
                  268
               
            
                  31×11.50-15LT
               
               
                  9
               
               
                  381
               
               
                  775
               
               
                  781
               
               
                  290
               
            
                  31×13.50-15LT
               
               
                  11
               
               
                  381
               
               
                  775
               
               
                  781
               
               
                  345
               
            
                  31×15.50-15LT
               
               
                  12
               
               
                  381
               
               
                  775
               
               
                  781
               
               
                  390
               
            
                  32×11.50-15LT
               
               
                  9
               
               
                  381
               
               
                  801
               
               
                  807
               
               
                  290
               
            
                  33×12.50-15LT
               
               
                  10
               
               
                  381
               
               
                  826
               
               
                  832
               
               
                  318
               
            
                  35×12.50-15LT
               
               
                  10
               
               
                  381
               
               
                  877
               
               
                  883
               
               
                  318
               
            
                  37×12.50-15LT
               
               
                  10
               
               
                  381
               
               
                  928
               
               
                  934
               
               
                  318
               
            
                  37×14.50-15LT
               
               
                  12
               
               
                  381
               
               
                  928
               
               
                  934
               
               
                  372
               
            
                  8.00-16.5LT
               
               
                  6.00
               
               
                  419
               
               
                  720
               
               
                  730
               
               
                  203
               
            
                  8.75-16.5LT
               
               
                  6.75
               
               
                  419
               
               
                  748
               
               
                  759
               
               
                  222
               
            
                  9.50-16.5LT
               
               
                  6.75
               
               
                  419
               
               
                  776
               
               
                  787
               
               
                  241
               
            
                  10-16.5LT
               
               
                  8.25
               
               
                  419
               
               
                  762
               
               
                  773
               
               
                  264
               
            
                  12-16.5LT
               
               
                  9.75
               
               
                  419
               
               
                  818
               
               
                  831
               
               
                  307
               
            
                  30×9.50-16.5LT
               
               
                  7.50
               
               
                  419
               
               
                  750
               
               
                  761
               
               
                  240
               
            
                  31×10.50-16.5LT
               
               
                  8.25
               
               
                  419
               
               
                  775
               
               
                  787
               
               
                  266
               
            
                  33×12.50-16.5LT
               
               
                  9.75
               
               
                  419
               
               
                  826
               
               
                  838
               
               
                  315
               
            
                  37×12.50-16.5LT
               
               
                  9.75
               
               
                  419
               
               
                  928
               
               
                  939
               
               
                  315
               
            
                  37×14.50-16.5LT
               
               
                  11.25
               
               
                  419
               
               
                  928
               
               
                  939
               
               
                  365
               
            
                  33×9.50 R15LT
               
               
                  7.50
               
               
                  381
               
               
                  826
               
               
                  832
               
               
                  240
               
            
                  35×12.50 R16.5LT
               
               
                  10.00
               
               
                  419
               
               
                  877
               
               
                  883
               
               
                  318
               
            
                  37×12.50 R17LT
               
               
                  10.00
               
               
                  432
               
               
                  928
               
               
                  934
               
               
                  318
               
            
         
      Table C
      Code designated tyres mounted on 5° tapered or flat base rims
      Diagonal and radial
      
                  Tyre size designation (13)
                  
               
               
                  Measuring rim width code
               
               
                  Nominal rim diameter d (mm)
               
               
                  Outer diameter D (mm) (14)
                  
               
               
                  Section width
                  S (mm) (15)
                  
               
            
                  Normal
               
               
                  Snow
               
            
                  (a)
               
               
                  (b)
               
            
                  6.50-20
               
               
                  5
               
               
                  508
               
               
                  878
               
               
                   
               
               
                  893
               
               
                  184
               
            
                  7.00-15TR
               
               
                  5.5
               
               
                  381
               
               
                  777
               
               
                   
               
               
                  792
               
               
                  199
               
            
                  7.00-18
               
               
                  5.5
               
               
                  457
               
               
                  853
               
               
                   
               
               
                  868
               
               
                  199
               
            
                  7.00-20
               
               
                  5.5
               
               
                  508
               
               
                  904
               
               
                   
               
               
                  919
               
               
                  199
               
            
                  7.50-15TR
               
               
                  6
               
               
                  381
               
               
                  808
               
               
                   
               
               
                  825
               
               
                  215
               
            
                  7.50-17
               
               
                  6
               
               
                  432
               
               
                  859
               
               
                   
               
               
                  876
               
               
                  215
               
            
                  7.50-18
               
               
                  6
               
               
                  457
               
               
                  884
               
               
                   
               
               
                  901
               
               
                  215
               
            
                  7.50-20
               
               
                  6
               
               
                  508
               
               
                  935
               
               
                   
               
               
                  952
               
               
                  215
               
            
                  8.25-15TR
               
               
                  6.5
               
               
                  381
               
               
                  847
               
               
                  855
               
               
                  865
               
               
                  236
               
            
                  8.25-20
               
               
                  6.5
               
               
                  508
               
               
                  974
               
               
                  982
               
               
                  992
               
               
                  236
               
            
                  9.00-15TR
               
               
                  7
               
               
                  381
               
               
                  891
               
               
                  904
               
               
                  911
               
               
                  259
               
            
                  9.00-20
               
               
                  7
               
               
                  508
               
               
                  1 019
               
               
                  1 031
               
               
                  1 038
               
               
                  259
               
            
                  10.00-15TR
               
               
                  7.5
               
               
                  381
               
               
                  927
               
               
                  940
               
               
                  946
               
               
                  278
               
            
                  10.00-20
               
               
                  7.5
               
               
                  508
               
               
                  1 054
               
               
                  1 067
               
               
                  1 073
               
               
                  278
               
            
                  10.00-22
               
               
                  7.5
               
               
                  559
               
               
                  1 104
               
               
                  1 118
               
               
                  1 123
               
               
                  278
               
            
                  11.00-20
               
               
                  8
               
               
                  508
               
               
                  1 085
               
               
                  1 099
               
               
                  1 104
               
               
                  293
               
            
                  11.00-22
               
               
                  8
               
               
                  559
               
               
                  1 135
               
               
                  1 150
               
               
                  1 155
               
               
                  293
               
            
                  11.00-24
               
               
                  8
               
               
                  610
               
               
                  1 186
               
               
                  1 201
               
               
                  1 206
               
               
                  293
               
            
                  11.50-20
               
               
                  8
               
               
                  508
               
               
                  1 085
               
               
                  1 099
               
               
                  1 104
               
               
                  296
               
            
                  12.00-20
               
               
                  8.5
               
               
                  508
               
               
                  1 125
               
               
                   
               
               
                  1 146
               
               
                  315
               
            
                  12.00-24
               
               
                  8.5
               
               
                  610
               
               
                  1 226
               
               
                   
               
               
                  1 247
               
               
                  315
               
            
                  14.00-20
               
               
                  10
               
               
                  508
               
               
                  1 241
               
               
                   
               
               
                  1 266
               
               
                  375
               
            
                  14.00-24
               
               
                  10
               
               
                  610
               
               
                  1 343
               
               
                   
               
               
                  1 368
               
               
                  375
               
            
         
      Table D
      Code designated tyres for special services
      Diagonal and radial
      
                  Tyre size designation
               
               
                  Measuring rim width code
               
               
                  Nominal rim diameter d (mm)
               
               
                  Outer diameter D (mm) (16)
                  
               
               
                  Section width
                  S (mm) (17)
                  
               
            
                  (a)
               
               
                  (b)
               
            
                  10.00-20ML
               
               
                  7.5
               
               
                  508
               
               
                  1 073
               
               
                  1 099
               
               
                  278
               
            
                  11.00-22ML
               
               
                  8
               
               
                  559
               
               
                  1 155
               
               
                  1 182
               
               
                  293
               
            
                  13.00-24ML
               
               
                  9
               
               
                  610
               
               
                  1 302
               
               
                   
               
               
                  340
               
            
                  14.00-20ML
               
               
                  10
               
               
                  508
               
               
                  1 266
               
               
                   
               
               
                  375
               
            
                  14.00-24ML
               
               
                  10
               
               
                  610
               
               
                  1 368
               
               
                   
               
               
                  375
               
            
                  15-19.5ML
               
               
                  11.75
               
               
                  495
               
               
                  1 019
               
               
                   
               
               
                  389
               
            
                  24 R 21
               
               
                  18
               
               
                  533
               
               
                  1 372
               
               
                  —
               
               
                  610
               
            
         
      Table E
      Code designated tyres mounted on 15° tapered rims
      Diagonal and radial
      
                  Tyre size designation (18)
                  
               
               
                  Measuring rim width code
               
               
                  Nominal rim diameter d (mm)
               
               
                  Outer diameter D (mm) (19)
                  
               
               
                  Section width
                  S (mm) (20)
                  
               
            
                  Normal
               
               
                  Snow
               
            
                  (a)
               
               
                  (b)
               
            
                  8-19.5
               
               
                  6.00
               
               
                  495
               
               
                  859
               
               
                   
               
               
                  876
               
               
                  203
               
            
                  8-22.5
               
               
                  6.00
               
               
                  572
               
               
                  935
               
               
                   
               
               
                  952
               
               
                  203
               
            
                  9-22.5
               
               
                  6.75
               
               
                  572
               
               
                  974
               
               
                  982
               
               
                  992
               
               
                  229
               
            
                  10-22.5
               
               
                  7.50
               
               
                  572
               
               
                  1 019
               
               
                  1 031
               
               
                  1 038
               
               
                  254
               
            
                  11-22.5
               
               
                  8.25
               
               
                  572
               
               
                  1 054
               
               
                  1 067
               
               
                  1 073
               
               
                  279
               
            
                  11-24.5
               
               
                  8.25
               
               
                  622
               
               
                  1 104
               
               
                  1 118
               
               
                  1 123
               
               
                  279
               
            
                  12-22.5
               
               
                  9.00
               
               
                  572
               
               
                  1 085
               
               
                  1 099
               
               
                  1 104
               
               
                  300
               
            
                  12-24.5
               
               
                  9.00
               
               
                  622
               
               
                  1 135
               
               
                  1 150
               
               
                  1 155
               
               
                  300
               
            
                  12.5-22.5
               
               
                  9.00
               
               
                  572
               
               
                  1 085
               
               
                  1 099
               
               
                  1 104
               
               
                  302
               
            
                  12.5-24.5
               
               
                  9.00
               
               
                  622
               
               
                  1 135
               
               
                  1 150
               
               
                  1 155
               
               
                  302
               
            
                  14-17.5
               
               
                  10.50
               
               
                  445
               
               
                  907
               
               
                   
               
               
                  921
               
               
                  349 (—)
               
            
                  15-19.5
               
               
                  11.75
               
               
                  495
               
               
                  1 005
               
               
                   
               
               
                  1 019
               
               
                  389 (—)
               
            
                  15-22.5
               
               
                  11.75
               
               
                  572
               
               
                  1 082
               
               
                   
               
               
                  1 095
               
               
                  389 (—)
               
            
                  16.5-22.5
               
               
                  13.00
               
               
                  572
               
               
                  1 128
               
               
                   
               
               
                  1 144
               
               
                  425 (—)
               
            
                  18-19.5
               
               
                  14.00
               
               
                  495
               
               
                  1 080
               
               
                   
               
               
                  1 096
               
               
                  457 (—)
               
            
                  18-22.5
               
               
                  14.00
               
               
                  572
               
               
                  1 158
               
               
                   
               
               
                  1 172
               
               
                  457 (—)
               
            
         (1)  
      
                  (+)
               
               
                  Tyres in diagonal construction are identified by an hyphen in place of the letter ‘R’ (e.g. 5.00-8).
               
            
         (2)  The tyre size designation may be supplemented with the letter ‘C’ (e.g. 6.00-16C).
      
         (3)  The tyre size designation may be supplemented with the letter ‘C’ (e.g. 7 R 17.5C).
      
         (4)  
      
                  (+)
               
               
                  Tyres in diagonal construction are identified by an hyphen in place of the letter ‘R’ (e.g. 145-10 C).
               
            
         (5)  
      
                  (+)
               
               
                  Tyres in radial construction are identified by the letter ‘R’ in place of the hyphen ‘-’ (e.g. 15×4 1/2 R 8).
               
            
         (6)  Tyres in Radial construction are identified by the letter ‘R’ in place of ‘-’ (e.g. 6.00 R 16LT).
      
         (7)  Coefficient ‘b’ for the calculation of Dmax: 1,08.
      
         (8)  Overall width may exceed this value up to +8 per cent.
      
         (9)  The suffix ‘MH’ may replace ‘LT’ in the tyre size designation (e.g. 7-14.5 MH).
      
         (10)  Tyres in Radial construction are identified by the letter ‘R’ in place of ‘-’ (e.g. 24×7.50 R 13LT).
      
         (11)  Coefficient ‘b’ for the calculation of Dmax: 1,07.
      
         (12)  Overall width may exceed this value up to +7 per cent.
      
         (13)  Tyres in Radial construction are identified by the letter ‘R’ in place of ‘-’ (e.g. 6.50 R 20).
      
         (14)  Coefficient ‘b’ for the calculation of Dmax: 1,06. Category of use: Normal Service tyres: (a) Highway tread (b) Heavy tread.
      
         (15)  Overall width may exceed this value up to +6 per cent.
      
         (16)  Coefficient ‘b’ for the calculation of Dmax: 1,06.
      Category of use: special (a) Traction tread (b) Heavy tread
      
         (17)  Overall width may exceed this value up to +8 per cent.
      
         (18)  Tyres in Radial construction are identified by the letter ‘R’ in place of ‘-’ (e.g. 8R19.5).
      
         (19)  Coefficient ‘b’ for the calculation of Dmax: 1,05.
      Category of use: Normal Service tyres: (a) Highway tread (b) Heavy tread
      
         (20)  Overall width may exceed this value up to +6 per cent
      (—) Overall width may exceed this value up to +5 per cent.
   
   
      ANNEX VI
      Method of measuring pneumatic tyres
      
                  1.
               
               
                  The tyre is mounted on the measuring rim specified by the manufacturer pursuant to paragraph 4.1.11 of this Regulation and is inflated to a pressure specified by the manufacturer pursuant to paragraph 4.1.12 of this Regulation.
               
            
                  2.
               
               
                  The tyre fitted on its rim is conditioned to the ambient temperature of the laboratory for at least 24 hours.
               
            
                  3.
               
               
                  The pressure is readjusted to the value specified in paragraph 1 above.
               
            
                  4.
               
               
                  The overall width is measured by caliper at six equally spaced points, account being taken of the thickness of the protective ribs or bands. The highest measurement so obtained is taken as the overall width.
               
            
                  5.
               
               
                  The outer diameter is calculated from the maximum circumference.
               
            
   
      ANNEX VII
      Procedure for load/speed endurance tests
      1.   PREPARING THE TYRE
      1.1.   Mount a new tyre on the test rim specified by the manufacturer pursuant to paragraph 4.1.11. of this Regulation.
      1.2.   Use a new inner tube or combination of inner tube, valve and flap (as required) when testing tyres with inner tubes.
      1.3.   Inflate the tyre to the pressure corresponding to the pressure index specified by the manufacturer pursuant to paragraph 4.1.12. of this Regulation.
      1.4.   Condition the tyre-and-wheel assembly at test-room temperature for not less than three hours.
      1.5.   Readjust the tyre pressure to that specified in paragraph 1.3. above.
      2.   TEST PROCEDURE
      2.1.   Mount the tyre-and-wheel assembly on the test axle and press it against the outer face of a smooth power-driven test drum 1,70 m ± 1 per cent in diameter having a surface at least as wide as the tyre tread.
      2.2.   Apply to the test axle a series of test loads expressed in per cent of the load indicated, in annex IV to this Regulation, opposite the load index engraved on the sidewall of the tyre, in accordance with the test programme below. Where the tyre has load-capacity indices for both single and twinned utilization, the reference load for single utilization shall be taken as the basis for the test loads.
      2.2.1.   In the case of tyres with a speed category symbol above P, test procedures are as specified in paragraph 3.
      2.2.2.   For all other tyre types, the endurance test programme is shown in appendix 1 to this annex.
      2.3.   The tyre pressure must not be corrected throughout the test and the test load must be kept constant throughout each of the three test stages.
      2.4.   During the test the temperature in the test-room must be maintained at between 20 °C and 30 °C or at a higher temperature if the manufacturer so agrees.
      2.5.   The endurance-test programme shall be carried out without interruption.
      3.   LOAD/SPEED TEST PROGRAMME FOR TYRE WITH SPEED CATEGORY SYMBOL Q AND ABOVE
      3.1.   This programme applies to:
      
                  3.1.1.
               
               
                  all tyres marked with load capacity index in single 121 or less.
               
            
                  3.1.2.
               
               
                  tyres marked with load capacity index in single 122 and above and with the additional marking ‘C’, or ‘LT’, referred to in paragraph 3.1.13. of this Regulation.
               
            3.2.   Load placed on the wheel as a percentage of the load corresponding to the load index:
      
                  3.2.1.
               
               
                  90 % when tested on a test drum 1,70 m ± 1 per cent in diameter;
               
            
                  3.2.2.
               
               
                  92 % when tested on a test drum 2,0 m ± 1 per cent in diameter.
               
            3.3.   Initial test speed: speed corresponding to the speed category symbol less 20 km/h;
      3.3.1.   Time to reach the initial test speed 10 min.
      3.3.2.   Duration of the first step = 10 min.
      3.4.   Second test speed: speed corresponding to the speed category symbol less 10 km/h;
      3.4.1.   Duration of the second step = 10 min.
      3.5.   Final test speed: speed corresponding to the speed category symbol:
      
                  3.5.1.
               
               
                  Duration of the final step = 30 min.
               
            3.6.   Total test duration: 1 h.
      4.   EQUIVALENT TEST METHODS
      If a method other than that described in paragraph 2. above is used, its equivalence must be demonstrated.
      
         Appendix 1
         Endurance-test programme
         
                     Load index
                  
                  
                     Tyre speed category
                  
                  
                     Test-drum speed
                  
                  
                     Load placed on the wheel as a percentage of the load corresponding to the load index
                  
               
                     Radial-ply min-1
                     
                  
                  
                     Diagonal (bias-ply) min-1
                     
                  
                  
                     7 h.
                  
                  
                     16 h.
                  
                  
                     24 h.
                  
               
                     122 or more
                  
                  
                     F
                  
                  
                     100
                  
                  
                     100
                  
                  
                     66 %
                  
                  
                     84 %
                  
                  
                     101 %
                  
               
                     G
                  
                  
                     125
                  
                  
                     100
                  
               
                     J
                  
                  
                     150
                  
                  
                     125
                  
               
                     K
                  
                  
                     175
                  
                  
                     150
                  
               
                     L
                  
                  
                     200
                  
                  
                     —
                  
               
                     M
                  
                  
                     225
                  
                  
                     —
                  
               
                     121 or less
                  
                  
                     F
                  
                  
                     100
                  
                  
                     100
                  
               
                     G
                  
                  
                     125
                  
                  
                     125
                  
               
                     J
                  
                  
                     150
                  
                  
                     150
                  
               
                     K
                  
                  
                     175
                  
                  
                     175
                  
               
                     L
                  
                  
                     200
                  
                  
                     175
                  
                  
                     70 %
                     4 h.
                  
                  
                     88 %
                     6 h.
                  
                  
                     106 %
                  
               
                     M
                  
                  
                     250
                  
                  
                     200
                  
                  
                     75 %
                  
                  
                     97 %
                  
                  
                     114 %
                  
               
                     N
                  
                  
                     275
                  
                  
                     —
                  
                  
                     75 %
                  
                  
                     97 %
                  
                  
                     114 %
                  
               
                     P
                  
                  
                     300
                  
                  
                     —
                  
                  
                     75 %
                  
                  
                     97 %
                  
                  
                     114 %
                  
               Notes:
         
                     (1)
                  
                  
                     ‘Special-use’ tyres (see paragraph 2.1.3 of the Regulation) should be tested at a speed equal to 85 per cent of the speed prescribed for equivalent normal tyres.
                  
               
                     (2)
                  
                  
                     Tyres with load index 122 or more, speed categories N or P and the additional marking ‘LT’, or ‘C’, referred to in paragraph 3.1.13 of this Regulation, shall be tested with the same programme as specified in the above table for tyres with load index 121 or less.
                  
               
      
         Appendix 2
         Relation between the pressure index and the units of pressure
         
                     Pressure Index (‘PSI’)
                  
                  
                     Bar
                  
                  
                     kPa
                  
               
                     20
                  
                  
                     1,4
                  
                  
                     140
                  
               
                     25
                  
                  
                     1,7
                  
                  
                     170
                  
               
                     30
                  
                  
                     2,1
                  
                  
                     210
                  
               
                     35
                  
                  
                     2,4
                  
                  
                     240
                  
               
                     40
                  
                  
                     2,8
                  
                  
                     280
                  
               
                     45
                  
                  
                     3,1
                  
                  
                     310
                  
               
                     50
                  
                  
                     3,4
                  
                  
                     340
                  
               
                     55
                  
                  
                     3,8
                  
                  
                     380
                  
               
                     60
                  
                  
                     4,1
                  
                  
                     410
                  
               
                     65
                  
                  
                     4,5
                  
                  
                     450
                  
               
                     70
                  
                  
                     4,8
                  
                  
                     480
                  
               
                     75
                  
                  
                     5,2
                  
                  
                     520
                  
               
                     80
                  
                  
                     5,5
                  
                  
                     550
                  
               
                     85
                  
                  
                     5,9
                  
                  
                     590
                  
               
                     90
                  
                  
                     6,2
                  
                  
                     620
                  
               
                     95
                  
                  
                     6,6
                  
                  
                     660
                  
               
                     100
                  
                  
                     6,9
                  
                  
                     690
                  
               
                     105
                  
                  
                     7,2
                  
                  
                     720
                  
               
                     110
                  
                  
                     7,6
                  
                  
                     760
                  
               
                     115
                  
                  
                     7,9
                  
                  
                     790
                  
               
                     120
                  
                  
                     8,3
                  
                  
                     830
                  
               
                     125
                  
                  
                     8,6
                  
                  
                     860
                  
               
                     130
                  
                  
                     9,0
                  
                  
                     900
                  
               
                     135
                  
                  
                     9,3
                  
                  
                     930
                  
               
                     140
                  
                  
                     9,7
                  
                  
                     970
                  
               
                     145
                  
                  
                     10,0
                  
                  
                     1 000
                  
               
                     150
                  
                  
                     10,3
                  
                  
                     1 030
                  
               
                     …
                  
                  
                     …
                  
                  
                     …
                  
               
   
   
      ANNEX VIII
      Variation of load capacity with speed commercial vehicles tyres radial and diagonal
      (See paras 2.27 and 2.29)
      
                  Variation of load capacity (per cent)
               
            
                  Speed (km/h)
               
               
                  All load indices
               
               
                  Load indices ≥ 122 (1)
                  
               
               
                  Load indices ≤ 121 (1)
                  
               
            
                  Speed category symbol
               
               
                  Speed category symbol
               
               
                  Speed category symbol
               
            
                  F
               
               
                  G
               
               
                  J
               
               
                  K
               
               
                  L
               
               
                  M
               
               
                  L
               
               
                  M
               
               
                  N
               
               
                  P (2)
                  
               
            
                  0
               
               
                  + 150
               
               
                  + 150
               
               
                  + 150
               
               
                  + 150
               
               
                  + 150
               
               
                  + 150
               
               
                  + 110
               
               
                  + 110
               
               
                  + 110
               
               
                  + 110
               
            
                  5
               
               
                  + 110
               
               
                  + 110
               
               
                  + 110
               
               
                  + 110
               
               
                  + 110
               
               
                  + 110
               
               
                  +90
               
               
                  +90
               
               
                  +90
               
               
                  +90
               
            
                  10
               
               
                  +80
               
               
                  +80
               
               
                  +80
               
               
                  +80
               
               
                  +80
               
               
                  +80
               
               
                  +75
               
               
                  +75
               
               
                  +75
               
               
                  +75
               
            
                  15
               
               
                  +65
               
               
                  +65
               
               
                  +65
               
               
                  +65
               
               
                  +65
               
               
                  +65
               
               
                  +60
               
               
                  +60
               
               
                  +60
               
               
                  +60
               
            
                  20
               
               
                  +50
               
               
                  +50
               
               
                  +50
               
               
                  +50
               
               
                  +50
               
               
                  +50
               
               
                  +50
               
               
                  +50
               
               
                  +50
               
               
                  +50
               
            
                  25
               
               
                  +35
               
               
                  +35
               
               
                  +35
               
               
                  +35
               
               
                  +35
               
               
                  +35
               
               
                  +42
               
               
                  +42
               
               
                  +42
               
               
                  +42
               
            
                  30
               
               
                  +25
               
               
                  +25
               
               
                  +25
               
               
                  +25
               
               
                  +25
               
               
                  +25
               
               
                  +35
               
               
                  +35
               
               
                  +35
               
               
                  +35
               
            
                  35
               
               
                  +19
               
               
                  +19
               
               
                  +19
               
               
                  +19
               
               
                  +19
               
               
                  +19
               
               
                  +29
               
               
                  +29
               
               
                  +29
               
               
                  +29
               
            
                  40
               
               
                  +15
               
               
                  +15
               
               
                  +15
               
               
                  +15
               
               
                  +15
               
               
                  +15
               
               
                  +25
               
               
                  +25
               
               
                  +25
               
               
                  +25
               
            
                  45
               
               
                  +13
               
               
                  +13
               
               
                  +13
               
               
                  +13
               
               
                  +13
               
               
                  +13
               
               
                  +22
               
               
                  +22
               
               
                  +22
               
               
                  +22
               
            
                  50
               
               
                  +12
               
               
                  +12
               
               
                  +12
               
               
                  +12
               
               
                  +12
               
               
                  +12
               
               
                  +20
               
               
                  +20
               
               
                  +20
               
               
                  +20
               
            
                  55
               
               
                  +11
               
               
                  +11
               
               
                  +11
               
               
                  +11
               
               
                  +11
               
               
                  +11
               
               
                  +17,5
               
               
                  +17,5
               
               
                  +17,5
               
               
                  +17,5
               
            
                  60
               
               
                  +10
               
               
                  +10
               
               
                  +10
               
               
                  +10
               
               
                  +10
               
               
                  +10
               
               
                  +15,0
               
               
                  +15,0
               
               
                  +15,0
               
               
                  +15,0
               
            
                  65
               
               
                  +7,5
               
               
                  +8,5
               
               
                  +8,5
               
               
                  +8,5
               
               
                  +8,5
               
               
                  +8,5
               
               
                  +13,5
               
               
                  +13,5
               
               
                  +13,5
               
               
                  +13,5
               
            
                  70
               
               
                  +5,0
               
               
                  +7,0
               
               
                  +7,0
               
               
                  +7,0
               
               
                  +7,0
               
               
                  +7,0
               
               
                  +12,5
               
               
                  +12,5
               
               
                  +12,5
               
               
                  +12,5
               
            
                  75
               
               
                  +2,5
               
               
                  +5,5
               
               
                  +5,5
               
               
                  +5,5
               
               
                  +5,5
               
               
                  +5,5
               
               
                  +11,0
               
               
                  +11,0
               
               
                  +11,0
               
               
                  +11,0
               
            
                  80
               
               
                  0
               
               
                  +4,0
               
               
                  +4,0
               
               
                  +4,0
               
               
                  +4,0
               
               
                  +4,0
               
               
                  +10,0
               
               
                  +10,0
               
               
                  +10,0
               
               
                  +10,0
               
            
                  85
               
               
                  –3
               
               
                  +2,0
               
               
                  +3,0
               
               
                  +3,0
               
               
                  +3,0
               
               
                  +3,0
               
               
                  +8,5
               
               
                  +8,5
               
               
                  +8,5
               
               
                  +8,5
               
            
                  90
               
               
                  –6
               
               
                  0
               
               
                  +2,0
               
               
                  +2,0
               
               
                  +2,0
               
               
                  +2,0
               
               
                  +7,5
               
               
                  +7,5
               
               
                  +7,5
               
               
                  +7,5
               
            
                  95
               
               
                  –10
               
               
                  –2,5
               
               
                  +1,0
               
               
                  +1,0
               
               
                  +1,0
               
               
                  +1,0
               
               
                  +6,5
               
               
                  +6,5
               
               
                  +6,5
               
               
                  +6,5
               
            
                  100
               
               
                  –15
               
               
                  –5
               
               
                  0
               
               
                  0
               
               
                  0
               
               
                  0
               
               
                  +5,0
               
               
                  +5,0
               
               
                  +5,0
               
               
                  +5,0
               
            
                  105
               
               
                   
               
               
                  –8
               
               
                  –2
               
               
                  0
               
               
                  0
               
               
                  0
               
               
                  +3,75
               
               
                  +3,75
               
               
                  +3,75
               
               
                  +3,75
               
            
                  110
               
               
                   
               
               
                  –13
               
               
                  –4
               
               
                  0
               
               
                  0
               
               
                  0
               
               
                  +2,5
               
               
                  +2,5
               
               
                  +2,5
               
               
                  +2,5
               
            
                  115
               
               
                   
               
               
                   
               
               
                  –7
               
               
                  –3
               
               
                  0
               
               
                  0
               
               
                  +1,25
               
               
                  +1,25
               
               
                  +1,25
               
               
                  +1,25
               
            
                  120
               
               
                   
               
               
                   
               
               
                  –12
               
               
                  –7
               
               
                  0
               
               
                  0
               
               
                  0
               
               
                  0
               
               
                  0
               
               
                  0
               
            
                  125
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                  0
               
               
                  –2,5
               
               
                  0
               
               
                  0
               
               
                  0
               
            
                  130
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                  0
               
               
                  –5,0
               
               
                  0
               
               
                  0
               
               
                  0
               
            
                  135
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                  –7,5
               
               
                  –2,5
               
               
                  0
               
               
                  0
               
            
                  140
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                  –10
               
               
                  –5
               
               
                  0
               
               
                  0
               
            
                  145
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                  –7,5
               
               
                  –2,5
               
               
                  0
               
            
                  150
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                  –10,0
               
               
                  –5,0
               
               
                  0
               
            
                  155
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                  –7,5
               
               
                  –2,5
               
            
                  160
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                   
               
               
                  –10,0
               
               
                  –5,0
               
            
         (1)  The load capacity indices refer to a single operation.
      
         (2)  Load variations are not allowed for speeds above 160 km/h. For speed category symbols ‘Q’ and above the speed category corresponding to the speed category symbol (see paragraph 2.28.2) specifies the maximum speed permitted for the tyre.
   
   
      ANNEX IX
      COMMUNICATION
      Upgrade of Service Description for the purposes of retreading in accordance with Regulation No 109
      (Maximum format: A4 (210 × 297 mm))
      Issued by (Name and Address of Tyre Manufacturer): …
      Declaration:
      The tyre corresponding to the following details has been approved to operate at a higher service description than that of the tyre originally approved. It is therefore permitted, subject to any limitations given in paragraph 4.1.1 below, for a tyre bearing the original service description and approval number, to be retreaded to the upgraded service description.
      It is also agreed that this information may be released by an approval authority to any retreading production unit that is approved in accordance with Regulation No 109.
      1.   Manufacturer’s name or trademark on the tyre: …
      2.   Manufacturer’s tyre type, model or design designation: …
      3.   Tyre size designation: …
      3.1.   Category of use (Normal, Snow or Special): …
      4.   Service description
      4.1.   Original tyre: …
      Approval No Pursuant to Regulation No 54 …
      Granted by: …
      4.1.1.   Where applicable, the production plant in which tyres suitable for upgrading were produced, the production periods concerned, and the means of identifying either or both of these issues:
      4.2.   Upgraded tyre: …
      Approval No pursuant to Regulation No 54: …
      Granted by: …
      5.   Authorised by (tyre manufacturer’s representative):
      5.1.   Name (Block capitals): …
      5.2.   Department: …
      5.3.   Signature: …