Regulation No 75 of the Economic Commission for Europe of the United Nations (UN/ECE) — Uniform provisions concerning the approval of pneumatic tyres for motor cycles and mopeds
Date: 2011-03-30
Institutions: United Nations Economic Commission for Europe
Subjects: UN regional commission, approval, harmonisation of standards, motor vehicle, pneumatic tyre, safety standard, technical standard, two-wheeled vehicle




L_2011084EN.01004601.xml










30.3.2011   


EN


Official Journal of the European Union


L 84/46






Only the original UN/ECE 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 75 of the Economic Commission for Europe of the United Nations (UN/ECE) — Uniform provisions concerning the approval of pneumatic tyres for motor cycles and mopeds

Incorporating all valid text up to:
Supplement 13 to the Regulation in its original form — Date of entry into force: 24 October 2009
      
CONTENTS
REGULATION







1.

Scope











2.

Definitions











3.

Markings











4.

Application for approval











5.

Approval











6.

Requirements











7.

Modifications of the type of pneumatic tyre and extension of approval











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 1 —

Communication concerning the approval or extension or refusal or withdraw of approval or production definitely discontinued of a type of pneumatic tyre for motor cycles and mopeds pursuant to Regulation No 75











Annex 2 —

Arrangement of the approval mark











Annex 3 —

Arrangement of tyre markings — Example of the markings to be borne by types of tyres placed on the market after the entry into force of this Regulation











Annex 4 —

Load capacity index/maximum mass correspondence











Annex 5 —

Tyre size designation and dimensions











Annex 6 —

Method of measuring pneumatic tyres











Annex 7 —

Procedure for load/speed performance tests











Annex 8 —

Tyre load capacities at various speeds











Annex 9 —

Test procedure for the dynamic growth of tyres




1.   SCOPE
This Regulation applies to new pneumatic tyres for vehicles of category L1, L2, L3, L4 and L5.
However, it does not apply to tyre types designed exclusively for the ‘off-road’ use, which are marked ‘NHS’ (Not for Highway Service) and to tyre types designed exclusively for competitions.
2.   DEFINITIONS
For the purpose 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 (normal: for normal highway service; special: for special applications such as on-and off-the-road, snow, moped);










2.1.4.


Structure (diagonal or bias-ply, bias belted, radial);










2.1.5.


Speed category;










2.1.6.


Load capacity index;










2.1.7.


Tyre cross-section.














2.2.


‘Structure of a pneumatic tyre’ means the technical characteristics of the tyre’s carcass. The following structures of a pneumatic tyre are distinguished in particular:






2.2.1.


‘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 centre line of the tread (1).










2.2.2.


‘Bias belted’ describes a pneumatic tyre structure of diagonal (bias-ply) type in which the carcass is restricted by a belt comprising two or more layers of substantially inextensible cord material laid at alternate angles close to those of the carcass.










2.2.3.


‘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 stabilised by an essentially inextensible circumferential belt (1).










2.2.4.


‘Reinforced’ describes a pneumatic tyre structure in which the carcass is more resistant than that of the corresponding normal tyre.














2.3.


‘Bead’ means the part of a pneumatic tyre which is of such shape and structure as to fit the rim and hold the tyre on it (2).










2.4.


‘Cord’ means the strands forming the fabric of the plies in the pneumatic tyre (2).










2.5.


‘Ply’ means a layer of rubber-coated parallel cords (2).










2.6.


‘Carcass’ means that part of a pneumatic tyre other than the tread and the rubber side walls which, when inflated, bears the load (2).










2.7.


‘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).










2.8.


‘Side wall’ means the part of a pneumatic tyre between the tread and the area designed to be covered by the rim flange (2).










2.9.


‘Tread groove’ means the space between two adjacent ribs or blocks in the tread pattern (2).










2.10.


‘Principal groove’ means the wide grooves situated in the central zone of the tread.










2.11.


‘Section width (S)’ means the linear distance between the outsides of the side walls of an inflated pneumatic tyre, excluding elevations due to labelling (marking), decoration or protective bands or ribs (2).










2.12.


‘Overall width’ means the linear distance between the outsides of the side walls of an inflated pneumatic tyre, including labelling (marking), decoration and protective bands or ribs (2); in the case of tyres where the tread is wider than the section width, the overall width corresponds to the tread width.










2.13.


‘Section height (H)’ means a distance equal to half the difference between the outer diameter of the tyre and the nominal rim diameter (2).










2.14.


‘Nominal aspect ratio (Ra)’ means the centuple of 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.










2.15.


‘Outer diameter (D)’ means the overall diameter of an inflated new pneumatic tyre (2).










2.16.


‘Tyre-size designation’ is a designation showing:






2.16.1.


The nominal section width (S1) 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 5 to this Regulation;










2.16.2.


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 5 to this Regulation;










2.16.3.


A conventional number ‘d’ denoting the nominal diameter of the rim and corresponding to its diameter expressed either by code (numbers below 100) or in millimetres’ (numbers above 100).






2.16.3.1.


The values in millimetres of the symbol ‘d’ when indicated by a code are as follows:






(in mm)




Symbol ‘d’ indicated by one or two figures according to the nominal rim diameter


Value of ‘d’




4 


102 




5 


127 




6 


152 




7 


178 




8 


203 




9 


229 




10 


254 




11 


279 




12 


305 




13 


330 




14 


356 




15 


381 




16 


406 




17 


432 




18 


457 




19 


483 




20 


508 




21 


533 




22 


559 




23 


584 






















2.17.


‘Nominal rim diameter (d)’ means the diameter of the rim on which a tyre is designed to be mounted (2).










2.18.


‘Rim’ means the support for a tyre-and-tube assembly, or for a tubeless tyre, on which the tyre beads are seated (2).






2.18.1.


‘Tyre to rim fitment configuration’ means the type of rim to which the tyre is designed to be fitted. In the case of non-standard rims this will be identified by a symbol applied to the tyre.














2.19.


‘Theoretical rim’ means the 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 tyre.










2.20.


‘Measuring rim’ means the rim on which a tyre is required to be fitted for size measurements.










2.21.


‘Test rim’ means the rim on which a tyre is required to be fitted for testing.










2.22.


‘Chunking’ means the breaking away of pieces of rubber from the tread.










2.23.


‘Cord separation’ means the parting of the cords from their rubber coating.










2.24.


‘Ply separation’ means the parting of adjacent plies.










2.25.


‘Tread separation’ means the pulling away of the tread from the carcass.










2.26.


‘Load capacity index’ means a figure associated with the maximum load a tyre can carry at the speed corresponding to its speed symbol according to the operating conditions specified by the tyre manufacturer. A list of those indices and of the corresponding loads is given in Annex 4 to this Regulation.










2.27.


‘Table of tyre load capacities at various speeds’ means the table in Annex 8 which shows, by reference to indices of load capacity and of capacity at nominal speed, load variations of a tyre if used at speeds other than that corresponding to the index of its nominal speed category.










2.28.


‘Speed category’ means:






2.28.1.


The speeds, expressed by the speed category symbol as shown in the table in paragraph 2.28.2.










2.28.2.


The speed categories are as shown in the table below:






(km/h)




Speed category symbol


Corresponding speed




B


50 




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 




V


240 




W


270 














2.28.3.


Tyres suitable for maximum speeds in excess of 240 km/h are identified by means of letter codes ‘V’ or ‘Z’ (see paragraph 2.33.3) placed within the tyre size designation in front of the indications of the structure (see paragraph 3.1.3).














2.29.


‘Snow tyre’ means a tyre whose tread pattern and whose structure are primarily designed to ensure in mud and fresh or melting snow a performance better than that of an ordinary (road-type) tyre. The tread pattern of a snow tyre generally consists of groove (rib) and/or solid-block elements more widely spaced than on an ordinary (road-type) tyre.










2.30.


‘MST’ means ‘multiservice tyre’, suitable both on and off road.










2.31.


‘Moped tyre’ means a tyre designed for the equipment of mopeds (categories L1 and L2).










2.32.


‘Motor cycle tyre’ means a tyre designed primarily for the equipment of motor cycles (categories L3, L4 and L5). However, they may also equip mopeds (categories L1 and L2) and light trailers (category 01).










2.33.


‘Maximum load rating’ means the maximum mass the tyre is rated to carry.






2.33.1.


For speeds lower or equal to 130 km/h, the maximum load rating must not exceed the percentage of the value associated with the relevant load capacity index of the tyre as indicated in the table ‘Load capacity variation with speed’ (see paragraph 2.27) with reference to the speed category symbol of the tyre and the speed capability of the vehicle to which the tyre is fitted.










2.33.2.


For speeds above 130 km/h but not exceeding 210 km/h, the maximum load rating must not exceed the value of the mass associated with the load capacity index of the tyre.










2.33.3.


For speeds above 210 km/h but not exceeding 270 km/h, the maximum load rating must not exceed the percentage of the mass, associated with the load capacity index of the tyre, indicated in the table below with reference to the speed category symbol of the tyre and the maximum design speed of the vehicle to which the tyre is to be fitted:







Maximum speed km/h (*3)



Maximum Load Rating (%)




Speed Category Symbol V


Speed Category Symbol W (*2)





210 


100 


100 




220 


95 


100 




230 


90 


100 




240 


85 


100 




250 


(80) (*1)



95 




260 


(75) (*1)



85 




270 


(70) (*1)



75 














2.33.4.


For speeds in excess of 270 km/h, the maximum load rating must not exceed the mass specified by the tyre manufacturer with reference to the speed capacity of the tyre.
For intermediate speeds between 270 km/h and the maximum speed permitted by the tyre manufacturer, a linear interpolation of the maximum load rating applies.








3.   MARKINGS








3.1.


Pneumatic tyres submitted for approval shall bear on at least one side wall the following markings:






3.1.1.


The trade name or mark;










3.1.2.


The tyre size designation as defined in paragraph 2.16 of this Regulation;










3.1.3.


An indication of the structure as follows:






3.1.3.1.


On diagonal (bias-ply) tyres, no marking, or the letter ‘D’,










3.1.3.2.


On bias-belted tyres, the letter ‘B’ placed in front of the rim-diameter marking, and in addition the words ‘BIAS-BELTED’ can be added,










3.1.3.3.


On radial-ply tyres, the letter ‘R’ placed in front of the rim-diameter marking, and, the word ‘RADIAL’ can be added.














3.1.4.


An indication of the tyre’s speed category by means of the symbol shown in paragraph 2.28.2 above;










3.1.5.


The load-capacity index as defined in paragraph 2.26 above;










3.1.6.


The word ‘TUBELESS’ if the tyre is designed for use without an inner tube;










3.1.7.


The word ‘REINFORCED’ or ‘REINF’ if the tyre is a reinforced tyre;










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. This marking, may be affixed to one side wall only.










3.1.9.


The inscription of ‘M + S’ or ‘M.S’ or ‘M & S’ in the case of a snow tyre. The inscription ‘DP’ (I.E. Dual Purpose) is accepted as a permitted alternative.










3.1.10.


The inscription MST in the case of multiservice tyres.










3.1.11.


The inscription ‘MOPED’ (or alternatively ‘CYCLOMOTEUR’ or ‘CICLOMOTORE’) in the case of moped tyres.










3.1.12.


An identification of the tyre to rim fitment configuration, when it differs from the standard configuration, immediately after the rim diameter marking referred to in paragraph 2.16.3 of this Regulation.
In the case of tyres intended to be fitted to rims having a diameter equivalent to code 13 (330 mm) or above, this inscription shall be ‘M/C’. This requirement shall not apply to any tyre sizes listed in the tables of Annex 5 to this Regulation.










3.1.13.


Tyres suitable for speeds above 240 km/h must be marked with the appropriate letter code ‘V’ or ‘Z’, as applicable (see paragraph 2.33.3) in front of the indication of the structure (see paragraph 3.1.3).










3.1.14.


Tyres suitable for speeds above 240 km/h or (270 km/h respectively) must bear, within parenthesis, the marking of the load capacity index (see paragraph 3.1.5) applicable at a speed of 210 km/h (or 240 km/h respectively) and a reference speed category symbol (see paragraph 3.1.4) as follows:

                           ‘V’ in case of tyres identified with the letter code ‘V’ within the size designation.

                           ‘W’ in case of tyres identified with the letter code ‘Z’ within the size designation.
















3.2.


Tyres shall provide adequate space for the approval mark, as shown in Annex 2 to this Regulation.












3.3.


Annex 3 to this Regulation gives an example 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.




4.   APPLICATION FOR APPROVAL








4.1.


The application for approval of a type of pneumatic tyre shall be submitted by the holder of the trade name or mark or by his duly accredited representative. It shall specify:






4.1.1.


The tyre-size designation as defined in paragraph 2.16 of this Regulation;










4.1.2.


The trade name or mark;










4.1.3.


The category of use (normal, special, snow or moped);










4.1.4.


Structure: diagonal (bias ply), bias belted or radial;










4.1.5.


The speed category;










4.1.6.


The load-capacity index of the tyre;










4.1.7.


Whether the tyre is to be used with or without an inner tube;










4.1.8.


Whether the tyre is ‘normal’ or ‘reinforced’;










4.1.9.


The ply-rating number of tyres for motor cycle derivatives (see table 5 of Annex 5 to this Regulation) (3);










4.1.10.


The overall dimensions: overall section width, and overall diameter;










4.1.11.


The rims on which the tyre can be mounted;










4.1.12.


The measuring rim and test rim;










4.1.13.


The test and measurement pressures;










4.1.14.


The factor X referred to in paragraph 2.19 above;










4.1.15.


For tyres identified by means of letter code ‘V’ within the size designation and suitable for speeds over 240 km/h or for tyres identified by means of letter code ‘Z’ within the size designation and suitable for speeds over 270 km/h, the maximum speed permitted by the tyre manufacturer and the load carrying capacity allowed for that maximum speed.
















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 1 year after the date of issue of the type approval.












4.3.


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 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 number so assigned shall not be assigned by the same Contracting Party to another type of pneumatic tyre.












5.3.


Notice of approval or of extension or of refusal or withdrawal of approval of a type of pneumatic tyre pursuant to this Regulation shall be communicated to the Parties to the Agreement applying this Regulation, by means of a form conforming to the model in Annex 1 to this Regulation.












5.3.1.


For tyres suitable for speeds above 240 km/h, the maximum speed permitted and the relevant load rating are specified under item 10 of Annex 1.












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 (4);










5.4.2.


The number of this Regulation, followed by the letter ‘R’, a dash and the type approval number.
















5.5.


The approval mark shall be clearly legible and be indelible.












5.6.


Annex 2 to this Regulation gives an example of the arrangement of the approval mark.




6.   REQUIREMENTS
6.1.   Dimensions of tyres
6.1.1.   Section width of a tyre








6.1.1.1.


The section width is 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 side wall of the tyre in the designation of the tyre as prescribed;




A


is the width (expressed in millimetres) of the measuring rim, as shown by the manufacturer in the descriptive note;




A1



is the width (expressed in millimetres) of the theoretical rim;




A1



shall be taken to equal S1 multiplied by the Factor X specified by the manufacturer;




K


shall be taken to equal 0,4.
















6.1.1.2.


However, for types of tyres for which the size designation is shown in the first column of the tables in Annex 5 to this Regulation, the section width shall be allowed to be that given opposite the tyre designation in the tables.




6.1.2.   Outer diameter of a tyre








6.1.2.1.


The outer diameter of a tyre is 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 2.16.3 above expressed in millimetres;




H


is the nominal section height in millimetres and is equal to:
H = S1 × 0,01 Ra
where:






S1



is the nominal section width (in millimetres); and




Ra


is the nominal aspect ratio;








all as shown on the side wall of the tyre in the tyre designation in conformity with the requirements of paragraph 3.4 above.












6.1.2.2.


However, for types of tyres for which the size designation is shown in the first column of the tables in Annex 5 to this Regulation, the outer diameter shall be allowed to be that given opposite the tyre designation in the tables.




6.1.3.   Method of measuring pneumatic tyres
The dimensions of pneumatic tyres shall be measured by the procedure described in Annex 6 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 S determined pursuant to paragraph 6.1.1 above.












6.1.4.2.


It may exceed that value up to the value shown in Annex 5 or for sizes not included in Annex 5 by the following percentages:






6.1.4.2.1.


For normal and snow service:






(a)


rim diameter code 13 and above: + 10 per cent;










(b)


rim diameter codes up to 12 inclusive: + 8 per cent.














6.1.4.2.2.


For special service tyres which are suitable for limited road use and are marked MST: 25 per cent.








6.1.5.   Tyre outer-diameter specifications








6.1.5.1.


The outer diameter of a tyre must not be outside the values Dmin and Dmax specified in Annex 5.












6.1.5.2.


For sizes not listed in Annex 5 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:
H and d are as defined in paragraph 6.1.2.1 and a and b are as specified in paragraphs 6.1.5.2.1 and 6.1.5.2.2 respectively.






6.1.5.2.1.


For normal highway service tyres and snow tyres a







Rim diameter code 13 and above


:


0,97




Rim diameter codes up to 12 inclusive


:


0,93




For special service tyres


:


1,00;














6.1.5.2.2.


For normal highway service tyres b







Rim diameter code 13 and above


:


1,07




Rim diameter codes up to 12 inclusive


:


1,10




For snow tyres and special service tyres


:


1,12.












6.2.   Load/speed performance test








6.2.1.


The pneumatic tyre shall undergo a load/speed performance test carried out by the procedure described in Annex 7 to this Regulation.












6.2.1.1.


Where application is made for tyres identified by means of letter code ‘V’ within the size designation and suitable for speeds over 240 km/h or for tyres identified by means of letter code ‘Z’ within the size designation and suitable for speeds over 270 km/h (see paragraph 4.1.15), the above load/speed test is carried out on one tyre at the load and speed conditions marked within parenthesis on the tyre (see paragraph 3.1.14). Another load/speed test must be carried out on a second tyre of the same type at the load and speed conditions, if any, specified as maximum by the tyre manufacturer (see paragraph 4.1.15).












6.2.2.


A tyre which after undergoing the load/speed 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 at least 6 hours after the load/speed performance test, must not differ by more than ± 3,5 per cent from the outer diameter as measured before the test.












6.2.4.


The overall width of the tyre measured at the end of the load/speed performance test must not exceed the value determined in paragraph 6.1.4.2.




6.3.   Dynamic growth of tyres
The tyres indicated in paragraph 1.1 of Annex 9 to this Regulation, which have passed the test for load/speed performance requirements in accordance with paragraph 6.2 above, shall be submitted to a dynamic growth test to be carried out in accordance with the procedure described in the said Annex.
7.   MODIFICATIONS OF THE TYPE OF PNEUMATIC TYRE AND EXTENSION OF APPROVAL








7.1.


Every modification of the type of pneumatic tyre shall be notified to the administrative department which approved the type of pneumatic tyre. The 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 pneumatic tyre still complies with the requirements; or










7.1.2.


Require a further test report from the technical service responsible for conducting the tests.










7.1.3.


A modification of the tread pattern of a tyre is deemed as not necessitating a repetition of the test specified in paragraph 6.2.










7.1.4.


Extensions of approval for tyres suitable for speeds over 240 km/h for tyres identified by means of letter code ‘V’ within the size designation (or 270 km/h for tyres identified by means of letter code ‘Z’ within the size designation), aiming at certification for different maximum speeds and/or loads, are permitted provided that a new test report, related to the new maximum speed and load rating, is supplied by the technical service responsible for carrying out tests.
Such new load/speed capabilities must be specified in item 9 of Annex 1.
















7.2.


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.












7.3.


The competent authority granting the extension of approval shall assign a series number to each communication form drawn up for such an extension.




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 2 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 requirements laid down in paragraph 8.1 above are 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 applying 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 1 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 a communication form conforming to the model in Annex 1 to this Regulation.
11.   NAMES AND ADDRESSES OF TECHNICAL SERVICES RESPONSIBLE FOR 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 approval tests and of the administrative departments which grant approval and to which forms certifying approval, or extension, 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 among those which are situated on their territory or on the territory of another Party to the Agreement, subject to a preliminary agreement to the 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.






(1)  Applicable also to Regulation No 54.

(2)  See the explanatory figure in the Appendix.

(*1)  Applicable only to tyres identified by means of letter code ‘V’ within the size designation and up to the maximum speed specified by the tyre manufacturer.

(*2)  Applicable also to tyres identified by means of letter code ‘Z’ within the size designation.

(*3)  For intermediate speeds linear interpolation of maximum load rating is allowed.

(3)  From the date of entry into force of Supplement 8 to this Regulation no new approvals for these tyres should be issued pursuant to Regulation No 75. These tyre sizes are now included in Regulation No 54.

(4)  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, 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 Union (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, 48 for New Zealand, 49 for Cyprus, 50 for Malta, 51 for the Republic of Korea, 52 for Malaysia, 53 for Thailand, 54 and 55 (vacant), 56 for Montenegro, 57 (vacant) and 58 for Tunisia. 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.




Appendix

EXPLANATORY FIGURE

(See paragraph 2 of the Regulation)










ANNEX 1

COMMUNICATION

(maximum format: A4 (210 x 297 mm))





Text of image

issued by: Name of administration:
concerning (2):
APPROVAL GRANTED,
APPROVAL EXTENDED,
APPROVAL REFUSED,
APPROVAL WITHDRAWN,
PRODUCTION DEFINITELY DISCONTINUED,
of a type of pneumatic tyre for motor cycles and mopeds pursuant to Regulation No 75.
Approval No: …
Extension No: …
1. Manufacturer’s name or trade mark(s) on the tyre type: …
2. Tyre type designation by the manufacturer: …
3. Manufacturer’s name and address: …
4. If applicable, name and address of manufacturer’s representative: …
5. Summarised description: …
5.1. Tyre size designation: …
5.2. Category of use: ordinary/snow/special/moped (2): …
5.3. Structure: Diagonal/bias-belted/radial (2): …
5.4. Speed category symbol: …
5.5. Load-capacity index: …
6. Technical service and, where applicable, test laboratory approved for purposes of approval or of verification of conformity: …
7. Date of report issued by that service: …
8. Number of report issued by that service: …
9. Reason(s) of extension (if applicable): …
10. Any remarks: …
11. Place: …
12. Date: …
13. Signature: …
14. Annexed to this communication is a list of documents in the approval file deposited at the Administrative Services having delivered the approval and which can be obtained upon request.
(1) Distinguishing number of the country which has granted/extended/refused/withdrawn approval (see approval provisions in the Regulation).
(2) Strike out what does not apply.






ANNEX 2

ARRANGEMENT OF THE APPROVAL MARK





Note:









ANNEX 3

ARRANGEMENT OF TYRE MARKINGS

Example of the markings to be borne by types of tyres placed on the market after the entry into force of this Regulation











b


=


4 mm min.




These markings define a pneumatic tyre:






—


Having a nominal section width of 100,










—


Having a nominal aspect ratio of 80,










—


Having a bias-belted structure,










—


Having a nominal rim diameter of 457 mm, for which the code is l8,










—


Having a load capacity of 206 kg, corresponding to load index 53 in Annex 4 to this Regulation,










—


Of speed category S (maximum speed 180 km/h),










—


For fitting without an inner tube (‘tubeless’),










—


Snow tyre manufactured in the 25th week of the year 2003.




The positioning and order of the markings constituting the tyre designation shall be the following:






(a)


The size designation, comprising the nominal section width, the nominal aspect ratio, the type-of-structure symbol (where applicable) and the nominal rim diameter shall be grouped as shown in the above example: 100/80Bl8;










(b)


The load index and the speed-category symbol shall be placed together near the size designation. They may either follow it or be placed above or below it;










(c)


The markings ‘TUBELESS’ and ‘REINFORCED’ or ‘REINF’ and ‘M + S’ and ‘MST’ and/or ‘MOPED’ (or CYCLOMOTEUR or CICLOMOTORE) may be at a distance from the size designation symbol;










(d)


In case of tyres suitable for speeds above 240 km/h the letter code ‘V’ or ‘Z’ as applicable, must be marked in front of the marking of structure (e.g. 140/60ZR18). The reference load capacity index and speed category symbol must be marked within parenthesis as applicable (see paragraph 3.1.14).









ANNEX 4

LOAD CAPACITY INDEX/MAXIMUM MASS CORRESPONDENCE








A


=


Load capacity index




B


=


Maximum corresponding mass (kg)













A


B




16


71 




17


73 




18


75 




19


77,5 




20


80 




21


82,5 




22


85 




23


87,5 




24


90 




25


92,5 




26


95 




27


97 




28


100 




29


103 




30


106 




31


109 




32


112 




33


115 




34


118 




35


121 




36


125 




37


128 




38


132 




39


136 




40


140 




41


145 




42


150 




43


155 




44


160 




45


165 




46


170 




47


175 




48


180 




49


185 




50


190 




51


195 




52


200 




53


206 




54


212 




55


218 




56


224 




57


230 




58


236 




59


243 




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 









ANNEX 5

TYRE SIZE DESIGNATION AND DIMENSIONS


Table 1


Tyres for motor cycles

Sizes with rim diameter code 12 and below











Tyre size


Measuring rim width
(Code)


Overall diameter
(mm)


Section width
(mm)


Maximum overall width
(mm)




 


 


D.min


D


D.max


 


 




2.50 – 8


 


328 


338 


352 


 


 




2.50 – 9


 


354 


364 


378 


 


 




2.50 – 10


1.50


379 


389 


403 


65 


70 




2.50 – 12


 


430 


440 


451 


 


 




2.75 – 8


 


338 


348 


363 


 


 




2.75 – 9


1.75


364 


374 


383 


71 


77 




2.75 – 10


 


389 


399 


408 


 


 




2.75 – 12


 


440 


450 


462 


 


 




3.00 – 4


 


241 


251 


264 


 


 




3.00 – 5


 


266 


276 


291 


 


 




3.00 – 6


 


291 


301 


314 


 


 




3.00 – 7


 


317 


327 


342 


 


 




3.00 – 8


2.10


352 


362 


378 


80 


86 




3.00 – 9


 


378 


388 


401 


 


 




3.00 – 10


 


403 


413 


422 


 


 




3.00 – 12


 


454 


464 


473 


 


 




3.25 – 8


 


362 


372 


386 


 


 




3.25 – 9


 


388 


398 


412 


 


 




3.25 – 10


2.50


414 


424 


441 


88 


95 




3.25 – 12


 


465 


475 


492 


 


 




3.50 – 4


 


264 


274 


291 


 


 




3.50 – 5


 


289 


299 


316 


 


 




3.50 – 6


 


314 


324 


341 


 


 




3.50 – 7


2.50


340 


350 


367 


92 


99 




3.50 – 8


 


376 


386 


397 


 


 




3.50 – 9


 


402 


412 


430 


 


 




3.50 – 10


 


427 


437 


448 


 


 




3.50 – 12


 


478 


488 


506 


 


 




4.00 – 5


 


314 


326 


346 


 


 




4.00 – 6


 


339 


351 


368 


 


 




4.00 – 7


2.50


365 


377 


394 


105 


113 




4.00 – 8


 


401 


415 


427 


 


 




4.00 – 10


 


452 


466 


478 


 


 




4,00 – 12


 


505 


517 


538 


 


 




4.50 – 6


 


364 


376 


398 


 


 




4.50 – 7


 


390 


402 


424 


 


 




4.50 – 8


 


430 


442 


464 


 


 




4.50 – 9


3.00


456 


468 


490 


120 


130 




4.50 – 10


 


481 


493 


515 


 


 




4.50 – 12


 


532 


544 


568 


 


 




5.00 – 8


 


453 


465 


481 


 


 




5.00 – 10


3.50


504 


516 


532 


134 


145 




5.00 – 12


 


555 


567 


583 


 


 




6.00 – 6


4.00


424 


436 


464 


 


 




6.00 – 7


 


450 


462 


490 


154 


166 




6.00 – 8


 


494 


506 


534 


 


 




6,00 – 9


 


520 


532 


562 


 


 








Table 1a


Tyres for mopeds

Sizes with rim diameter code 12 and below











Tyre size


Measuring rim width
(Code)


Overall diameter
(mm)


Section width
(mm)


Maximum overall width
(mm) (1)





 


 


D.min


D


D.max (1)



 


 




2 – 12


1.35


413 


417 


426 


55 


59 




2-1/2 – 12


1.50


425 


431 


441 


62 


67 




2-1/2 – 8


1.75


339 


345 


356 


70 


76 




2-1/2 – 9


1.75


365 


371 


382 


70 


76 




2-3/4 – 9


1.75


375 


381 


393 


73 


79 




3 – 10


2.10


412 


418 


431 


84 


91 




3 – 12


2.10


463 


469 


482 


84 


91 








Table 2


Tyres for motor cycles

Normal section size













Tyre size


Measuring rim width
(Code)


Overall diameter
(mm)


Section width
(mm)


Maximum overall width
(mm)




 


 


D.min


D


D.max (2)



D.max (3)



 



 (2)




 (3)





1 3/4 – 19


1.20


582 


589 


597 


605 


50 


54 


58 




2 – 14


 


461 


468 


477 


484 


 


 


 




2 – 15


 


486 


493 


501 


509 


 


 


 




2 – 16


 


511 


518 


526 


534 


 


 


 




2 – 17


 


537 


544 


552 


560 


 


 


 




2 – 18


1.35


562 


569 


577 


585 


55 


58 


63 




2 – 19


 


588 


595 


603 


611 


 


 


 




2 – 20


 


613 


620 


628 


636 


 


 


 




2 – 21


 


638 


645 


653 


661 


 


 


 




2 – 22


 


663 


670 


680 


686 


 


 


 




2 1/4 – 14


 


474 


482 


492 


500 


 


 


 




2 1/4 – 15


 


499 


507 


517 


525 


 


 


 




2 1/4 – 16


 


524 


532 


540 


550 


 


 


 




2 1/4 – 17


 


550 


558 


566 


576 


 


 


 




2 1/4 – 18


1.50


575 


583 


591 


601 


62 


66 


71 




2 1/4 – 19


 


601 


609 


617 


627 


 


 


 




2 1/4 – 20


 


626 


634 


642 


652 


 


 


 




2 1/4 – 21


 


651 


659 


667 


677 


 


 


 




2 1/4 – 22


 


677 


685 


695 


703 


 


 


 




2 1/2 – 14


 


489 


498 


508 


520 


 


 


 




2 1/2 – 15


 


514 


523 


533 


545 


 


 


 




2 1/2 – 16


 


539 


548 


558 


570 


 


 


 




2 1/2 – 17


 


565 


574 


584 


596 


 


 


 




2 1/2 – 18


1.60


590 


599 


609 


621 


68 


72 


78 




2 1/2 – 19


 


616 


625 


635 


647 


 


 


 




2 1/2 – 20


 


641 


650 


660 


672 


 


 


 




2 1/2 – 21


 


666 


675 


685 


697 


 


 


 




2 1/2 – 22


 


692 


701 


711 


723 


 


 


 




2 3/4 – 14


 


499 


508 


518 


530 


 


 


 




2 3/4 – 15


 


524 


533 


545 


555 


 


 


 




2 3/4 – 16


 


549 


558 


568 


580 


 


 


 




2 3/4 – 17


 


575 


584 


594 


606 


 


 


 




2 3/4 – 18


1.85


600 


609 


621 


631 


75 


80 


86 




2 3/4 – 19


 


626 


635 


645 


657 


 


 


 




2 3/4 – 20


 


651 


660 


670 


682 


 


 


 




2 3/4 – 21


 


676 


685 


695 


707 


 


 


 




2 3/4 – 22


 


702 


711 


721 


733 


 


 


 




3 – 16


 


560 


570 


582 


594 


 


 


 




3 – 17


 


586 


596 


608 


620 


 


 


 




3 – 18


1.85


611 


621 


633 


645 


81 


86 


93 




3 – 19


 


637 


647 


659 


671 


 


 


 




3 1/4 – 16


 


575 


586 


598 


614 


 


 


 




3 1/4 – 17


 


601 


612 


624 


640 


 


 


 




3 1/4 – 18


2.15


626 


637 


651 


665 


89 


94 


102 




3 1/4 – 19


 


652 


663 


675 


691 


 


 


 








Table 3


Tyres for motor cycles

Normal section sizes














Tyre size


Measuring rim width
(Code)


Overall diameter
(mm)


Section width
(mm)


Maximum overall width
(mm)




 


 


D.min


D


D.max (4)



D.max (5)



 



 (6)




 (7)




 (8)





2.00 – 14


 


460 


466 


478 


 


 


 


 


 




2.00 – 15


 


485 


491 


503 


 


 


 


 


 




2.00 – 16


 


510 


516 


528 


 


 


 


 


 




2.00 – 17


1.20


536 


542 


554 


 


52 


57 


60 


65 




2.00 – 18


 


561 


567 


579 


 


 


 


 


 




2.00 – 19


 


587 


593 


605 


 


 


 


 


 




2.25 – 14


 


474 


480 


492 


496 


 


 


 


 




2.25 – 15


 


499 


505 


517 


521 


 


 


 


 




2.25 – 16


 


524 


530 


542 


546 


 


 


 


 




2.25 – 17


1.60


550 


556 


568 


572 


61 


67 


70 


75 




2.25 – 18


 


575 


581 


593 


597 


 


 


 


 




2.25 – 19


 


601 


607 


619 


623 


 


 


 


 




2.50 – 14


 


486 


492 


506 


508 


 


 


 


 




2.50 – 15


 


511 


517 


531 


533 


 


 


 


 




2.50 – 16


 


536 


542 


556 


558 


 


 


 


 




2.50 – 17


1.60


562 


568 


582 


584 


65 


72 


75 


79 




2.50 – 18


 


587 


593 


607 


609 


 


 


 


 




2.50 – 19


 


613 


619 


633 


635 


 


 


 


 




2.50 – 21


 


663 


669 


683 


685 


 


 


 


 




2.75 – 14


 


505 


512 


524 


530 


 


 


 


 




2.75 – 15


 


530 


537 


549 


555 


 


 


 


 




2.75 – 16


 


555 


562 


574 


580 


 


 


 


 




2.75 – 17


1.85


581 


588 


600 


606 


75 


83 


86 


91 




2.75 – 18


 


606 


613 


625 


631 


 


 


 


 




2.75 – 19


 


632 


639 


651 


657 


 


 


 


 




2.75 – 21


 


682 


689 


701 


707 


 


 


 


 




3.00 – 14


 


519 


526 


540 


546 


 


 


 


 




3.00 – 15


 


546 


551 


565 


571 


 


 


 


 




3.00 – 16


 


569 


576 


590 


596 


 


 


 


 




3.00 – 17


1.85


595 


602 


616 


622 


80 


88 


92 


97 




3.00 – 18


 


618 


627 


641 


647 


 


 


 


 




3.00 – 19


 


644 


653 


667 


673 


 


 


 


 




3.00 – 21


 


694 


703 


717 


723 


 


 


 


 




3.00 – 23


 


747 


754 


768 


774 


 


 


 


 




3.25 – 14


 


531 


538 


552 


560 


 


 


 


 




3.25 – 15


 


556 


563 


577 


585 


 


 


 


 




3.25 – 16


 


581 


588 


602 


610 


 


 


 


 




3.25 – 17


2.15


607 


614 


628 


636 


89 


98 


102 


108 




3.25 – 18


 


630 


639 


653 


661 


 


 


 


 




3.25 – 19


 


656 


665 


679 


687 


 


 


 


 




3.25 – 21


 


708 


715 


729 


737 


 


 


 


 




3.50 – 14


 


539 


548 


564 


572 


 


 


 


 




3.50 – 15


 


564 


573 


589 


597 


 


 


 


 




3.50 – 16


 


591 


598 


614 


622 


 


 


 


 




3.50 – 17


2.15


617 


624 


640 


648 


93 


102 


107 


113 




3.50 – 18


 


640 


649 


665 


673 


 


 


 


 




3.50 – 19


 


666 


675 


691 


699 


 


 


 


 




3.50 – 21


 


716 


725 


741 


749 


 


 


 


 




3.75 – 16


 


601 


610 


626 


634 


 


 


 


 




3.75 – 17


 


627 


636 


652 


660 


 


 


 


 




3.75 – 18


2.15


652 


661 


677 


685 


99 


109 


114 


121 




3.75 – 19


 


678 


687 


703 


711 


 


 


 


 




4.00 – 16


 


611 


620 


638 


646 


 


 


 


 




4.00 – 17


 


637 


646 


664 


672 


 


 


 


 




4.00 – 18


2.50


662 


671 


689 


697 


108 


119 


124 


130 




4.00 – 19


 


688 


697 


715 


723 


 


 


 


 




4.25 – 16


 


623 


632 


650 


660 


 


 


 


 




4.25 – 17


 


649 


658 


676 


686 


 


 


 


 




4.25 – 18


2.50


674 


683 


701 


711 


112 


123 


129 


137 




4.25 – 19


 


700 


709 


727 


737 


 


 


 


 




4.50 – 16


 


631 


640 


658 


668 


 


 


 


 




4.50 – 17


 


657 


666 


684 


694 


 


 


 


 




4.50 – 18


2.75


684 


691 


709 


719 


123 


135 


141 


142 




4.50 – 19


 


707 


717 


734 


745 


 


 


 


 




5.00 – 16


 


657 


666 


686 


698 


 


 


 


 




5.00 – 17


 


683 


692 


710 


724 


 


 


 


 




5.00 – 18


3.00


708 


717 


735 


749 


129 


142 


148 


157 




5.00 – 19


 


734 


743 


761 


775 


 


 


 


 








Table 4


Tyres for motor cycles

Low section sizes














Tyre size


Measuring rim width
(Code)


Overall diameter
(mm)


Section width
(mm)


Maximum overall width
(mm)




 


 


D.min


D


D.max (9)



D.max (10)



 



 (11)




 (12)




 (13)





3.60 – 18


 


605 


615 


628 


633 


 


 


 


 




 


2.15


 


 


 


 


93 


102 


108 


113 




3.60 – 19


 


631 


641 


653 


658 


 


 


 


 




4.10 – 18


 


629 


641 


654 


663 


 


 


 


 




 


2.50


 


 


 


 


108 


119 


124 


130 




4.10 – 19


 


655 


667 


679 


688 


 


 


 


 




5.10 – 16


 


615 


625 


643 


651 


 


 


 


 




5.10 – 17


3.00


641 


651 


670 


677 


129 


142 


150 


157 




5.10 – 18


 


666 


676 


694 


702 


 


 


 


 




4.25/85 – 18


2.50


649 


659 


673 


683 


112 


123 


129 


137 




4.60 – 16


 


594 


604 


619 


628 


 


 


 


 




4.60 – 17


2.75


619 


630 


642 


654 


117 


129 


136 


142 




4.60 – 18


 


644 


654 


670 


678 


 


 


 


 




6.10 – 16


4.00


646 


658 


678 


688 


168 


185 


195 


203 








Table 5


Tyres for motor cycle derivatives
 (14)












Tyre size


Measuring rim width
(Code)


Overall diameter
(mm)


Section width
(mm)


Maximum overall width
(mm)




 


 


D.min


D


D.max


 


 




3.00 – 8C


 


359 


369 


379 


 


 




3.00 – 10C


2.10


410 


420 


430 


80 


86 




3.00 – 12C


 


459 


471 


479 


 


 




3.50 – 8C


 


376 


386 


401 


 


 




3.50 – 10C


2.50


427 


437 


452 


92 


99 




3.50 – 12C


 


478 


488 


503 


 


 




4.00 – 8C


 


405 


415 


427 


 


 




4.00 – 10C


3.00


456 


466 


478 


108 


117 




4.00 – 12C


 


507 


517 


529 


 


 




4.50 – 8C


 


429 


439 


453 


 


 




4.50 – 10C


3.50


480 


490 


504 


125 


135 




4.50 – 12C


 


531 


541 


555 


 


 




5.00 – 8C


 


455 


465 


481 


 


 




5.00 – 10C


3.50


506 


516 


532 


134 


145 




5.00 – 12C


 


555 


567 


581 


 


 








Table 6


Motor cycle tyres

Low pressure sizes











Tyre size


Measuring rim width
(Code)


Overall diameter
(mm)


Section width
(mm)


Maximum overall width
(mm)




 


 


D.min


D


D.max


 


 




5.4 – 10


 


474 


481 


487 


 


 




5.4 – 12


 


525 


532 


547 


 


 




5.4 – 14


4.00


575 


582 


598 


135 


143 




5.4 – 16


 


626 


633 


649 


 


 




6.7 – 10


 


532 


541 


561 


 


 




6.7 – 12


5.00


583 


592 


612 


170 


180 




6.7 – 14


 


633 


642 


662 


 


 








Table 7


Motor cycle tyres

Sizes and dimensions of American tyres











Tyre size


Measuring rim width
(Code)


Overall diameter
(mm)


Section width
(mm)


Maximum overall width
(mm)




 


 


D.min


D


D.max


 


 




MH90 – 21


1.85


682 


686 


700 


80 


89 




MJ90 – 18


2.15


620 


625 


640 


 


 




 


 


 


 


 


89 


99 




MJ90 – 19


2.15


645 


650 


665 


 


 




ML90 – 18


2.15


629 


634 


650 


 


 




 


 


 


 


 


93 


103 




ML90 – 19


2.15


654 


659 


675 


 


 




MM90 – 19


2.15


663 


669 


685 


95 


106 




MN90 – 18


2.15


656 


662 


681 


104 


116 




MP90 – 18


2.15


667 


673 


692 


108 


120 




MR90 – 18


2.15


680 


687 


708 


114 


127 




MS90 – 17


2.50


660 


667 


688 


121 


134 




MT90 – 16


3.00


642 


650 


672 


 


 




 


 


 


 


 


130 


144 




MT90 – 17


3.00


668 


675 


697 


 


 




MU90 – 15M/C


3.50


634 


642 


665 


 


 




 


 


 


 


 


142 


158 




MU90 – 16


3.50


659 


667 


690 


 


 




MV90 – 15M/C


3.50


643 


651 


675 


150 


172 




MP85 – 18


2.15


654 


660 


679 


108 


120 




MR85 – 16


2.15


617 


623 


643 


114 


127 




MS85 – 18


2.50


675 


682 


702 


121 


134 




MT85 – 18


3.00


681 


688 


709 


130 


144 




MU85 – 16M/C


3.50


650 


658 


681 


142 


158 




MV85 – 15M/C


3.50


627 


635 


658 


150 


172 






(1)  Normal road (highway) service.

(2)  Normal highway service.

(3)  Special service and snow tyres.

(4)  Tyres for normal highway service.

(5)  Tyres for special service and snow tyres.

(6)  Tyres for normal highway service up to speed category P inclusive.

(7)  Tyres for normal highway service above speed category P and snow tyres.

(8)  Tyres for special service.

(9)  Tyres for normal highway service.

(10)  Tyres for special service and snow tyres.

(11)  Tyres for normal highway service up to speed category P inclusive.

(12)  Tyres for normal highway service above speed category P and snow tyres.

(13)  Tyres for special service.

(14)  From the date of entry into force of Supplement 8 to this Regulation no new approvals for these tyres should be issued pursuant to Regulation No 75. These tyre sizes are now included in Regulation No 54, Annex 5, Part I, Table A.





ANNEX 6

METHOD OF MEASURING PNEUMATIC TYRES









1.


The tyre is mounted on the measuring rim specified by the manufacturer pursuant to paragraph 4.1.12 of this Regulation and is inflated to a pressure specified by the manufacturer.
As an alternative, inflation pressures could be specified as follows:









Tyre version


Speed category


Pressure




 


 


bar


kPa




Standard


F, G, J, K, L, M, N, P, Q, R, S


2,25 


225 




T, U, H, V, W


2,80 


280 




Reinforced


F to P


 


 




 


Q, R, S, T, U, H, V


3,30 


330 




Motorcycle Derivatives (1)



4PR


F to M


3,50 


350 




 


6PR


4,00 


400 




 


8PR


4,50 


450 




Moped


Standard


B


2,25 


225 




Reinforced


B


2,80 


280 




For other tyre versions, inflate to the pressure specified by the tyre manufacturer.












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 calliper 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 determined by measuring the maximum circumference and dividing the figure so obtained by π (3,1416).






(1)  From the date of entry into force of Supplement 8 to this Regulation no new approvals for these tyres should be issued pursuant to Regulation No 75. These tyre sizes are now included in Regulation No 54.





ANNEX 7

PROCEDURE FOR LOAD/SPEED PERFORMANCE TESTS

1.   PREPARATION OF TYRE








1.1.


Mount a new tyre on the test rim specified by the manufacturer pursuant to paragraph 4.1.12 of this Regulation.












1.2.


Inflate the tyre to the appropriate pressure given in the following table:









Testing inflation pressure (bars)




Tyre size


Speed Category


Inflation pressure




bar


kPa




Standard


F, G, J, K


2,50 


250 




L, M, N, P


2,50 


250 




Q, R, S


3,00 


300 




T, U, H, V


3,50 


350 




Reinforced


F, G, J, K, L, M, N, P


3,30 


330 




Q, R, S, T, U, H, V


3,90 


390 




Motorcycle Derivatives (1)



4PR


F, G, J, K, L, M


3,70 


370 




6PR


4,50 


450 




8PR


5,20 


520 




Moped


Standard


B


2,50 


250 




Reinforced


B


3,00 


300 




For speeds above 240 km/h, the test pressure is 3,20 bar (320 kPa).
For other types of tyre, inflate to the pressure specified by the manufacturer.












1.3.


The manufacturer may request, giving reasons, the use of test-inflation pressures differing from those given under paragraph 1.2 above. In such a case the tyre shall be inflated to that pressure.












1.4.


Condition the tyre-and-wheel assembly at test room temperature for not less than 3 hours.












1.5.


Readjust the tyre pressure to that specified in paragraph 1.2 or 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 test drum of 1,70 m ± 1 per cent or 2,0 m ± 1 per cent in diameter.












2.2.


Apply to the test axle a load equal to 65 per cent of:






2.2.1.


The maximum load rating equated to the Load Capacity Index for tyres with speed symbols up to H inclusive;










2.2.2.


The maximum load rating associated with a maximum speed of 240 km/h for tyres with speed symbol ‘V’ (see paragraph 2.33.3 of this Regulation);










2.2.3.


The maximum load rating associated with a maximum speed of 270 km/h for tyres with speed symbol ‘W’ (see paragraph 2.33.3);










2.2.4.


The maximum load rating associated with the maximum speed specified by the tyre manufacturer for tyres suitable for speeds above 240 km/h (or 270 km/h as applicable) (see paragraph 6.2.1.1).










2.2.5.


In case of moped tyres (speed category symbol B) the test load is 65 per cent on a 1,7 m diameter test drum and 67 per cent on a 2,0 m diameter test drum.
















2.3.


The tyre pressure must not be corrected throughout the test and the test load must be kept constant.












2.4.


During the test the temperature in the test room must be maintained between 20 °C and 30 °C or at a higher temperature if the manufacturer so agrees.












2.5.


The test shall be run without interruption, in accordance with the following:






2.5.1.


Twenty minutes is allowed to build up from zero to the initial test speed;










2.5.2.


Initial tests speed: 30 km/h less than the speed corresponding to the speed category symbol marked on the tyre (see paragraph 2.28.2 of this Regulation) if a 2,0 m diameter test drum is used, or 40 km/h less if a 1,7 m diameter test drum is used;






2.5.2.1.


The maximum speed to be considered for the second test in case of tyres suitable for speeds above 240 km/h for tyres identified by means of letter code ‘V’ within the size designation (or 270 km/h for tyres identified by means of letter code ‘Z’ within the size designation) is the maximum speed specified by the tyre manufacturer (see paragraph 4.1.15).














2.5.3.


Speed steps of 10 km/h;










2.5.4.


Test duration at each speed step: 10 minutes;










2.5.5.


Total duration of the test: 1 hour;










2.5.6.


Maximum test speed: the maximum rated speed of the type of tyre if the test is performed with a 2,0 m diameter test drum; maximum rated speed for the type of tyre less 10 km/h if the test is performed with a 1,7 m diameter test drum.










2.5.7.


In case of moped tyres (speed category symbol B), the test speed is 50 km/h, the build-up from 0 to 50 km/h is 10 minutes, the duration at the speed step is 30 minutes with a total duration of the test of 40 minutes.
















2.6.


However, in case a second test is performed to assess the top performances of tyres suitable for speed above 240 km/h, the procedure shall be the following:






2.6.1.


Twenty minutes to build up from zero to the initial test speed;










2.6.2.


Twenty minutes at the initial test speed;










2.6.3.


Ten minutes to build up to the maximum test speed;










2.6.4.


Five minutes at the maximum test speed.








3.   EQUIVALENT TESTS
If a test other than that described above is used, its equivalence must be proved.


(1)  From the date of entry into force of Supplement 8 to this Regulation no new approvals for these tyres should be issued pursuant to Regulation No 75. These tyre sizes are now included in Regulation No 54.





ANNEX 8

TYRE LOAD CAPACITIES AT VARIOUS SPEEDS




Speed
(km/h)
Variation in load carrying capacity (%)
Moped
Rim Diameter Code up to 12 inclusive
Rim Diameter Code 13 and above
Speed Symbol
Speed Symbol
B
J
K
L
J
K
L
M
N
P and above
30
+ 30
+ 30
See column J
+ 30
See column J
50
0
+ 30
+ 30
60
+ 23
+ 23
70
+ 16
+ 16
80
+ 10
+ 10
+ 14
90
+ 5
+ 7,5
+ 5
+ 7,5
+ 7,5
+ 7,5
+ 12
100
0
0
+ 5
0
0
+ 5,0
+ 5
+ 5
+ 10
110
– 7
0
+ 2,5
0
+ 2,5
+ 2,5
+ 2,5
+ 8
120
– 15
– 6
0
0
0
0
+ 6
130
– 25
– 12
– 5
0
0
+ 4
140
0





ANNEX 9

TEST PROCEDURE FOR THE DYNAMIC GROWTH OF TYRES

1.   SCOPE AND RANGE OF APPLICATION
1.1.   This testing procedure is applicable for tyres mentioned in paragraphs 3.4.1 and 4.1 below.
1.2.   It serves to determine the maximum tyre growth under the influence of centrifugal forces at the admissible maximum speed.
2.   DESCRIPTION OF TEST PROCEDURE
2.1.   The test axle and the rim must be controlled in order to assure a radial run-out less than ± 0,5 mm and a lateral run-out less than ± 0,5 mm, when measured at the bead seat of the wheel.
2.2.   Contour outline device
Any device (projecting grid, camera, spot lights and others) which permits the external contour of the tyre cross-section to be outlined distinctly, or to establish an enveloping curve, normal to the tyre equator, at the point of the maximum deformation of the tread.
The device should reduce to a minimum any distortion and assure a constant (known) ratio (K) between the plotted contour and the actual tyre dimensions.
The device shall permit reference of the tyre contour to the wheel axis.
2.3.   The deviation of the tyre tread peripheral speed, measured with a stroboscope, from the corresponding maximum speed of the tyre may not exceed ± 2 per cent.
2.4.   If another test procedure is applied, it must be proved to be equivalent to the present procedure.
3.   EXECUTION OF TEST
3.1.   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 tyre manufacturer agrees.
3.2.   The tyres to be tested shall have passed the load speed performance test according to Annex 7 to the Regulation, without showing any defect.
3.3.   The tyre to be tested shall be fitted to a wheel having a rim conforming to the applicable standard.
3.4.   The tyre inflation pressure (testing pressure) shall be adjusted to the values indicated in paragraph 3.4.1 below.








3.4.1.


Road tyres in bias and bias/belted construction.








Speed category


Tyre construction


Testing pressure




 


 


bar


kPA




P/Q/R/S


standard


2,5 


250 




T and above


standard


2,9 


290 








3.5.   The tyre/wheel assembly shall be stored at the temperature of the testing room for a period of at least 3 hours.
3.6.   After this conditioning storage period the inflation pressure shall be readjusted to the value indicated in paragraph 3.4.
3.7.   Mount the tyre and rim assembly on the test axle and ensure the assembly is freely rotating. The tyre can be rotated either by means of a drive motor acting on the tyre axis or by pressing it against a test drum.
3.8.   Accelerate the assembly without interruption to reach within five minutes the maximum speed capability of the tyre.
3.9.   Position the contour outline device and ascertain that it is perpendicular to the rotation of the test tyre tread.
3.10.   Check that the peripheral speed of the tread surface is within ± 2 per cent of the maximum speed capability for the tyre. Maintain the equipment at constant speed for at least five minutes and then portray the tyre cross-section in the area of maximum deformation, or check that the tyre does not exceed the enveloping curve.
4.   EVALUATION
4.1.   The limiting curve (enveloping curve) specified for the mounted tyre/wheel assembly shall be as in the example below):

Enveloping curve for centrifugal growth test




G dyn










SG



=


Maximum overall width in service (This changes 1 mm per 0.1 Rim width code change from the measuring rim)




Hdyn



=


Centrifugal radius – D/2.




In accordance with paragraphs 6.1.4 and 6.1.5 of the Regulation, the following limit values have been established for the enveloping curve:







Speed Category


H dyn (mm)




 


Category of Use:
Normal


Category of Use:
Snow and special




P/Q/R/S


H × 1,10


H × 1,15




T/U/H


H × 1,13


H × 1,18




Over 210 km/h


H × 1,16


—












4.1.1.


The main dimensions of the enveloping curve must be adjusted, if applicable, taking into account the constant ratio K (see paragraph 2.2 above).




4.2.   The contour of the tyre portrayed at the maximum speed shall not exceed the enveloping curve, with reference to the tyre axes.
4.3.   The tyre is not subjected to a further test.