Regulation No 106 of the Economic Commission for Europe of the United Nations (UN/ECE) — Uniform provisions concerning the approval of pneumatic tyres for agricultural vehicles and their trailers
Date: 2010-09-30
Institutions: United Nations Economic Commission for Europe
Subjects: approval, harmonisation of standards, tractor, vehicle parts




L_2010257EN.01023101.xml










30.9.2010   


EN


Official Journal of the European Union


L 257/231






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 106 of the Economic Commission for Europe of the United Nations (UN/ECE) — Uniform provisions concerning the approval of pneumatic tyres for agricultural vehicles and their trailers

Incorporating all valid text up to:
Supplement 8 to the original version of the Regulation — Date of entry into force: 17 March 2010
      
CONTENTS
REGULATION







1.

Scope











2.

Definitions











3.

Markings











4.

Application for approval











5.

Approval











6.

Requirements











7.

Modification of tyre type 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, of test laboratories, and of administrative departments




ANNEXES







Annex 1 —

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 106











Annex 2 —

Arrangement of approval mark











Annex 3 —

Arrangement of tyre markings











Annex 4 —

List of load capacity indices (LI) and corresponding maximum mass to be carried (kg)











Annex 5 —

Theoretical rim, outer diameter and nominal section width of tyres of certain size designations











Annex 6 —

Test method for measuring tyre dimensions











Annex 7 —

Variation of load capacity with speed











Annex 8 —

Test procedure to assess tyre resistance to bursting











Annex 9 —

Load/speed test procedure











Annex 10 —

Tyre classification code











Annex 11 —

Example of the pictogram to be marked on both tyre sidewalls of the tyres to explicit the maximum inflation pressure not to be exceeded for bead seating during tyre mounting




1.   SCOPE
This Regulation covers new pneumatic tyres designed primarily, but not only, for agricultural and forestry vehicles (power-driven vehicles in category T), agricultural machines (power-driven and trailed) and agricultural trailers, and identified by speed category symbols corresponding to speeds of 65 km/h (speed symbol ‘D’) and below.
It does not apply to tyre types designated primarily for other purposes, such as:






(a)


Construction application (tyres marked ‘Industrial’ or ‘IND’ or ‘R4’ or ‘F3’);










(b)


Earth-moving equipment;










(c)


Industrial and lift trucks.




2.   DEFINITIONS
For the purposes of this Regulation:






2.1.


‘Type of agricultural tyre’ means a category of 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:






(a)


Tractor — Steering wheel:










(b)


Tractor — Drive wheel — standard tread










(c)


Tractor — Drive wheel — special tread










(d)


Implement — traction:










(e)


Implement — trailer;










(f)


Implement — mixed applications;










(g)


Forestry machines — standard tread;










(h)


Forestry machines — special tread.














2.1.4.


structure (diagonal (bias-ply), bias-belted, radial-ply);










2.1.5.


speed category symbol;










2.1.6.


load capacity index;










2.1.7.


tyre cross-section;














2.2.


For reference on the following terms see explanatory figure in appendix 1.










2.3.


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






2.3.1.


‘Diagonal’ or ‘bias-ply’ describes a tyre structure in which the ply cords extend to the bead and are laid at alternate angles of substantially less than 90° to the centreline of the tread;










2.3.2.


‘Bias-belted’ describes a 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;










2.3.3.


‘Radial’ describes a 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;














2.4.


‘Bead’ means the part of a tyre which is of such shape and structure as to fit the rim and hold the tyre on it;










2.5.


‘Cord’ means the strands forming the fabric of the plies in the tyre;










2.6.


‘Ply’ means a layer of rubber-coated parallel cords;










2.7.


‘Carcass’ means that part of a tyre other than the tread and the rubber sidewalls which, when inflated, bears the load;










2.8.


‘Tread’ means that part of a tyre which comes into contact with the ground;










2.9.


‘Sidewall’ means the part of the tyre, excluding the tread, which is visible when the tyre, fitted to a rim, is viewed from the side;










2.10.


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










2.11.


‘Overall width’ means the linear distance between the outside of the sidewalls of an inflated tyre, including labelling (marking), decoration and protective bands or ribs;










2.12.


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










2.13.


‘Nominal aspect ratio (Ra)’ means one hundred times the number obtained by dividing the number expressing the nominal section height in millimetres by the number expressing the nominal section width in millimetres;










2.14.


‘Outer diameter (D)’ means the overall diameter of an inflated new tyre;










2.15.


‘Tyre-size designation’ means a designation showing:






2.15.1.


the nominal section width (S1). This value must be expressed in mm.










2.15.2.


the nominal aspect ratio (Ra).










2.15.3.


an indication of the structure, placed in front of the nominal rim diameter marking, as follows:






2.15.3.1.


n diagonal (bias-ply) tyres, the symbol ‘-’ or the letter ‘D’;










2.15.3.2.


n radial-ply tyres, the letter ‘R’;










2.15.3.3.


n bias-belted tyres, the letter ‘B’.














2.15.4.


the conventional number ‘d’ denoting the nominal rim diameter;










2.15.5.


optionally, the letters ‘IMP’ after the nominal rim diameter marking in case of Implement tyres;










2.15.6.


optionally, the letters ‘FRONT’ after the nominal rim diameter marking in case of Tractor steering wheel tyres;










2.15.7.


However for tyres listed in annex 5 the ‘tyre size designation’ is that shown in the first column of those tables.










2.15.8.


The letters ‘IF’ before the nominal section width in case of ‘Improved Flexion Tyre’
The letters ‘VF’ before the nominal section width in case of ‘Very High Flexion Tyre’.














2.16.


‘Nominal rim diameter (d)’ means a conventional number denoting the nominal diameter of the rim on which a tyre is designed to be mounted and corresponding to the diameter of the rim expressed either by size codes (number below 100 — see table for equivalence with millimeters) or in mm (numbers above 100) but not both;






‘d’ symbol expressed by codes


value to be used for the calculation in paras. 6.2.1 and 6,4 (mm)




4


102 




5


127 




6


152 




7


178 




8


203 




9


229 




10


254 




11


279 




12


305 




13


330 




14


356 




15


381 




15,3


389 




16


406 




16,1


409 




17


432 




18


457 




19


483 




20


508 




21


533 




22


559 




24


610 




26


660 




28


711 




30


762 




32


813 




34


864 




36


914 




38


965 




40


1 016 




42


1 067 




44


1 118 




46


1 168 




48


1 219 




50


1 270 




52


1 321 




54


1 372 




 


 




14,5


368 




15,5


394 




16,5


419 




17,5


445 




19,5


495 




20,5


521 




22,5


572 




24,5


622 




26,5


673 




30,5


775 














2.17.


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










2.18.


‘Theoretical rim’ means the notional rim whose width would be equal to X times the nominal section width of a tyre; the value ‘X’ must be specified by the tyre manufacturer or the reference rim width is that mentioned in annex 5 for the relevant ‘tyre size designation’;










2.19.


‘Measuring rim’ means the rim on which a tyre is fitted for the measurement of the dimensions;










2.20.


‘Tractor-drive wheel tyre’ means a tyre designed to be fitted to driven axles of agricultural tractors (vehicles in categories T) suitable for sustained high torque service. The tread pattern of the tyre consists of lugs or cleats.






2.20.1.


‘Improved Flexion Tyre’ or ‘Very High Flexion Tyre’ describe a pneumatic-tyre structure in which the carcass is more resistant than that of the corresponding standard tyre.














2.21.


‘Tractor steering wheel tyre’ means a tyre designed to be fitted to non-driven axles of agricultural and forestry tractors (motor vehicles in category T); The tread pattern of the tyre generally consists of circumferential grooves and ribs.










2.22.


‘Implement tyre’ means a tyre designed primarily for agricultural machines or implements (vehicles in category S) or for agricultural trailers (vehicles in category R); however it may also equip either front steering wheels and drive wheels of agricultural and forestry tractors (vehicles in category T), but it is not suitable for sustained high torque services.










2.23.


‘Traction tyre’ means a tyre designed primarily for the equipment of driven axles of implements or agricultural machinery, excluding sustained high torque services. The tread pattern of the tyre generally consists of lugs or cleats. The type of application is identified with the symbol: 













2.24.


‘Trailer tyre’ means a tyre designed for the equipment of non-driven (trailed) axles of implements, agricultural machinery or trailers.
The type of application is identified with the symbol: 













2.25.


‘Mixed applications tyre’ means a tyre designed to be fitted to either driven and non-driven axles of implements, agricultural machinery or trailers;










2.26.


‘Service description’ means the association of a load capacity index with a speed category symbol






2.26.1.


In case of implement tyres the service description is supplemented with the relevant symbol for the type of application concerned (traction or trailer) as defined in paragraphs 2.23 and 2.24.














2.27.


‘Supplementary service description’ means an additional service description, marked within a circle, to identify a special type of service (load rating and speed category) to which the tyre type is also allowed in addition to the applicable load variation with speed (see annex 7).










2.28.


‘Load-capacity index’ means one number which indicates the load the tyre can carry in single formation at the speed corresponding to the associated speed category and when operated in conformity with the requirements governing utilisation specified by the manufacturer. The list of these indices and their corresponding masses is given in annex 4;










2.29.


‘Speed category’, the reference speed expressed by the speed category symbol as shown in the table below:






Speed category symbol


Reference speed
(km/h)




A2


10 




A4


20 




A6


30 




A8


40 




B


50 




D


65 














2.30.


‘Table: Variation of load capacity with speed’ means the tables in annex 7 showing as a function of the category of use, the type of application, the load capacity index and the nominal speed category symbol, the maximum load rating variations which a tyre can withstand when used at speeds different from that corresponding to its speed category symbol;






2.30.1.


The table ‘Variation of load capacity with speed’ is not applicable to the ‘supplementary service description’.










2.30.2.


The table ‘Variation of load capacity with speed’ is not applicable to ‘Improved Flexion’ or ‘Very High Flexion’ tyres.














2.31.


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






2.31.1.


It 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 2.30 above), with reference to the category of use, the speed category symbol of the tyre and the speed capability of the vehicle to which the tyre is fitted.














2.32.


‘Tread groove’ means the space between the adjacent ribs or blocks in the tread pattern;










2.33.


‘Tread lug (or cleat)’ means the solid-block element protruding from the base of the tread pattern;










2.34.


‘Special tread’ means a tyre, the tread pattern and structure of which are primarily designed to ensure in marshy areas a better grip than that of a standard tread tyre. The tread pattern of the tyre generally consists of lugs or cleats deeper than those of a standard tyre;










2.35.


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










2.36.


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










2.37.


‘Ply separation’ means the parting of adjacent plies;










2.38.


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










2.39.


‘Test rim’ means the rim on which a tyre must be fitted for the performance test.










2.40.


‘Tyre classification code’ means the optional marking detailed in annex 10 that identifies the category of use and the particular type of tread pattern and application as specified by ISO 4251-4.










2.41.


Forestry tyre: means a tyre designed to be fitted to machines or equipments used in forestry applications.




3.   MARKINGS
3.1.   Tyres must bear:






3.1.1.


the manufacturer’s trade name or mark;










3.1.2.


the tyre-size designation as defined in paragraph 2.15;










3.1.3.


an indication of the structure as follows:






3.1.3.1.


on diagonal (bias-ply) tyres, no additional marking;










3.1.3.2.


on radial-ply tyres, optionally, the word ‘RADIAL’;










3.1.3.3.


on bias-belted tyres, the words ‘BIAS-BELTED’;














3.1.4.


the ‘service description’ as defined in paragraph 2.26.






3.1.4.1.


in the case of implement tyre, the service description must be supplemented with the relevant application symbol;










3.1.4.2.


in the case of implement tyre for mixed applications the tyre must be marked with two service descriptions one for ‘trailer’ applications and the other for ‘traction’ applications, each supplemented with the relevant symbol (see paragraphs 2.23 and 2.24 above) as follows:














or











where the first service description (95 A6) refers to ‘traction applications’ and the second (108 A6) to ‘trailer applications’.














3.1.5.


the supplementary service description, if applicable.










3.1.6.


the inscription ‘DEEP’ (or ‘R-2’) in the case of a special tread tyre;










3.1.7.


the inscriptions ‘F-1’ or ‘F-2’ in the case of a Tractor steering wheel tyre that is not already marked as per paragraph 2.15.6 above;










3.1.8.


the inscriptions ‘LS-1’, ‘LS-2’, ‘LS-3’ or ‘LS-4’ in the case of tyres for forestry machines.






3.1.8.1.


‘LS-3’ identifies special tread tyres.










3.1.8.2.


The inscription ‘I-3’ for implement tyres with traction tread as identified in Annex 5, tables 5 and 6.














3.1.9.


the inscription ‘IMPLEMENT’ in the case of an implement tyre that is not already marked as per paragraph 2.15.5 above;










3.1.10.


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










3.1.11.


the inscription ‘…bar MAX.’ (or ‘… kPa MAX’) inside the pictogram shown in annex 11, to notify the cold inflation pressure that shall not be exceeded for bead seating during tyre mounting.










3.1.12.


The inscription ‘IF’ shall be added in front of the tyre-size designation when the tyre is ‘Improved Flexion Tyre’.
The inscription ‘VF’ shall be added in front of the tyre-size designation when the tyre is ‘Very High Flexion Tyre’.




3.2.   The tyre must also be marked with 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 shall not be mandatory on any tyre submitted for approval until two years after the date of entry into force of this Regulation (1).
3.3.   The tyre must also bear the ECE tyre type approval mark, the model of which is given in annex 2.
3.4.   Position of markings








3.4.1.


The markings referred to in paragraph 3.1 shall be moulded on both sidewalls of the tyre.












3.4.2.


The markings referred to in paragraphs 3.2 and 3.3 shall be moulded on one sidewall only.












3.4.3.


All markings must be clearly and legibly moulded and produced as part of the process during manufacture. The use of branding or other methods of marking after completion of the original manufacturing process is not permitted.




3.5.   Annex 3 gives examples of the arrangement of tyre markings.
4.   APPLICATION FOR APPROVAL








4.1.


The application for approval of a type of tyre for agricultural and forestry services 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 2.15 of this Regulation.










4.1.2.


The trade name or mark.










4.1.3.


The category of use as defined in paragraph 2.1.3 of this Regulation.










4.1.4.


The structure.










4.1.5.


The speed category symbol.










4.1.6.


The load-capacity index of the tyre, specifying in case of implement tyres that for traction (only) and that for trailer application, if applicable.










4.1.7.


Whether the tyre is to be fitted with or without an inner tube.










4.1.8.


The supplementary service description, if applicable.










4.1.9.


The tyre/rim configuration.










4.1.10.


The rim to be used for measurements and the rim to be used for tests.










4.1.11.


The rim(s) on which the tyre can be mounted.










4.1.12.


The inflation pressure (bar or kPa) for measurements.










4.1.13.


The factor X referred to in paragraph 2.18 or the applicable table of annex 5.










4.1.14.


The cold inflation pressure that shall not be exceeded for bead seating during tyre mounting, as specified by the tyre manufacturer for the tyre type.










4.1.15.


The test pressure, in kPa (or in bar).
















4.2.


On request of the approval authority, the tyre manufacturer must also submit a complete technical file for each tyre type containing in particular sketches or photographs (three copies) to identify the tread pattern and the envelope of the inflated tyre mounted on the measuring rim showing the relevant dimensions (see paragraphs 6.1 and 6.2) of the component type submitted for approval. It shall also either contain the test report issued by an approved test laboratory or be accompanied by one sample of the tyre type, as requested by the approval authority.




5.   APPROVAL








5.1.


If the type of pneumatic tyre submitted for approval in pursuance to 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 extension or refusal or withdrawal of approval or production definitely discontinued of a type of pneumatic tyre pursuant to this Regulation shall be communicated to the Parties to the 1958 Agreement which apply this Regulation, by means of a form conforming to the model in annex 1 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 3.3 above and in addition to the markings prescribed in paragraphs 3.1 and 3.2 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 (2).










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.   Section width of a tyre








6.1.1.


Except as provided by paragraph 6.1.2, the section width is calculated by the following formula:
S = S1 + K (A – A1)
where:






S


is the ‘section width’ expressed in mm related to the measuring rim;




S1


is the ‘nominal section width’ in mm as shown on the sidewall of the tyre in the tyre-size designation as prescribed;




A


is the width (expressed in mm) (3) of the measuring rim, as shown by the manufacturer in the descriptive note,




A1


is the width (expressed in mm) (3) of the theoretical rim; it is taken to equal S1 multiplied by the factor X as specified by the tyre manufacturer and




K


is taken to equal 0,4.
















6.1.2.


However, for the types of tyre for which the size designation is given in the first column of the tables in annex 5, the theoretical rim width (A1) and the nominal section width (S1) are given opposite the tyre size designation in those tables.




6.2.   Outer diameter of a tyre








6.2.1.


Except as provided by paragraph 6.2.2, the outer diameter of a tyre is calculated by the following formula:
D = d + 2 H
where:






D


is the outer diameter expressed in mm,




d


is the conventional number denoting the nominal rim diameter expressed in mm (see paragraph 2.16),




H


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




where:






Ra


is the nominal aspect ratio,




S1


is the ‘nominal section width’ in mm




all as shown on the sidewall of the tyre in the tyre-size designation in conformity with the requirements of paragraph 2.15.












6.2.2.


However, for the types of tyres for which the size designation is given in the first column of the tables of annex 5 the outer diameter (D) and the nominal rim diameter (d) expressed in mm are given opposite the tyre size designation in those tables.




6.3.   Tyre section width: specification of tolerances








6.3.1.


The overall width of a tyre may be less than the section width determined pursuant to paragraph 6.1, or shown in annex 5;












6.3.2.


The overall width of a tyre may not exceed the section width determined pursuant to paragraph 6.1 by more than the following:






 


Radial construction: + 5 %










 


Diagonal (bias) construction: + 8 %
















6.3.3.


However, for the types of tyre for which the size designation is given in the first column of the tables in annex 5, the allowed percentages are those given in the relevant tables, if any.




6.4.   Tyre outer diameter: specification of tolerances








6.4.1.


The outer diameter of a tyre must not be outside the values D min and D max obtained from the following formulae:
D min = d + 2 (H × a)
D max = d + 2 (H × b)
where ‘H’ and ‘d’ are as defined in paragraph 6.2.1.






6.4.1.1.


for sizes listed in annex 5: H = 0,5 (D – d) (for references see paragraph 6.2 above).
















6.4.2.


coefficients ‘a’ and ‘b’ are respectively:









Category of use


Radial


Diagonal (bias)




a


b


a


b




Steering wheels


0,96 


1,04 


0,96 


1,07 




Tractor drive wheels and forestry machines — normal


0,96 


1,04 


0,96 


1,07 




Tractor drive wheels and forestry machines — special


1,00 


1,12 


1,00 


1,12 




Implement


0,96 


1,04 


0,96 


1,07 
















6.4.3.


However, for the types of tyre for which the size designation is given in the first column of the tables in Annex 5, the allowed percentages are those given in the relevant tables, if any.




6.5.   Test procedures








6.5.1.


The actual dimensions of tyres are measured as prescribed in annex 6.












6.5.2.


The test procedure to assess the resistance of the tyre to burst is described in annex 8.






6.5.2.1.


A tyre which, after undergoing the relevant test to assess the resistance to burst, does not exhibit any tread separation, ply separation, cord separation, broken beads or broken cords is deemed to have passed the test. The tyre tested shall not be used for any other tests.
















6.5.3.


The test procedures to assess the suitability of the tyre for the claimed performances are described in annex 9.






6.5.3.1.


A tyre which, after undergoing the relevant load/speed test, does not exhibit any tread separation, ply separation, cord separation or broken cords is deemed to have passed the test. The tyre tested shall not be used for any other tests.










6.5.3.2.


A tyre which, after undergoing the relevant load/speed test, does exhibit chunking, due to the specific test conditions is deemed to have passed the test.
















6.5.4.


Where a tyre manufacturer produces a range of tyres it is not considered necessary to carry out tests on every type of tyre in the range.




7.   MODIFICATION OF TYRE TYPE AND EXTENSION OF APPROVAL








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 meet 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 1 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.


The pneumatic 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 which apply 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 Agreement which apply 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 CONDUCTING APPROVAL TESTS, OF TEST LABORATORIES, 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 paragraphs 2.2 and 4.1)
Tyre cross Section











Lug (cleat) tread pattern


Circumferential Rib tread pattern






















(1)  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.

(2)  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 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, 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.

(3)  Conversion factor from code to mm is 25,4.




ANNEX 1

COMMUNICATION

(maximum format: A4 (210 × 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 vehicles pursuant to Regulation No 106
Approval No …
Extension No …
1. Manufacturer’s name or trade mark(s) on the tyre: …
2. Tyre type designation by the manufacturer: …
3. Manufacturer’s name and address: …
4. If applicable, name and address of manufacturer’s representative: …
5. Summarized description:
5.1. Size of tyre: …
5.2. Category of use: …
5.3. Structure: diagonal (bias-ply)/bias belted/radial (2)
5.4. Speed category symbol: …
5.5. Load-capacity index:
5.5.1. for traction (implement only): …
5.5.2. for trailer (implement only): …
5.6. Whether the tyre is to be fitted with or without an inner tube
5.7. The supplementary service description, if applicable: …
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 APPROVAL MARK












ANNEX 3

ARRANGEMENT OF TYRE MARKINGS

(see paragraphs 3.1 and 3.2)
PART A:   DRIVE WHEEL TYRES FOR AGRICULTURAL TRACTORS
Example of the markings to be borne by types of tyres complying with this Regulation






Minimum heights of markings (mm)









Tyres of Nominal Section Width


TYRES OF RIM DIAMETER CODE




UP TO 12


13 TO 19,5


20 AND ABOVE




up to 130


b = 4
c = 4


b = 6
c = 4


b = 9
c = 4




135 to 235


b = 6
c = 4


b = 6
c = 4


b = 9
c = 4




240 and above


b = 9
c = 4


b = 9
c = 4


b = 9
c = 4




These markings define a Drive wheel tyre:






—


having a nominal section width of 360,










—


having a nominal aspect ratio of 70,










—


of radial ply structure (R),










—


having a nominal rim diameter of 610 for which the code is 24,










—


having a load capacity of 1 250 kg, corresponding to load index 116 in annex 4,










—


classified in the speed category A8 (reference speed 40 km/h),










—


allowed to be used additionally at 50 km/h (speed category symbol B) with a load capacity of 1 150 kg corresponding to the load capacity index 113 shown in annex 4,










—


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










—


having a special tread (‘R-2’),










—


manufactured during the twenty-fifth week of the year 2006
(see paragraph 3.2 of the Regulation).




The positioning and order of the markings constituting the tyre designation are as follows:






(a)


the size designation, comprising the prefix (if any), the nominal section width, the nominal aspect ratio, the type-of-structure symbol (where applicable) and the nominal rim diameter, must be grouped as shown in the examples:
360/70 R 24, IF 360/70 R 24, VF 360/70 R 24.










(b)


the service description (load index and the speed category symbol) is placed near the size designation. It may either precede or follow it or be placed above or below it;










(c)


the symbols ‘TUBELESS’, ‘R-2’ or ‘DEEP’, the optional word ‘RADIAL’ and the date of production may be at a distance from the size designation.










(d)


the marking of the additional Service Description inside the circle may show either the speed category symbol after or below the load index.




PART B:   STEERING WHEEL TYRES FOR AGRICULTURAL AND FORESTRY TRACTORS
Example of the markings to be borne by types of tyres complying with this Regulation






Minimum heights of markings (mm)









Tyres of Nominal Section Width


TYRES OF RIM DIAMETER CODE




UP TO 12


13 TO 19,5


20 AND ABOVE




up to 130


b = 4
c = 4


b = 6
c = 4


b = 9
c = 4




135 to 235


b = 6
c = 4


b = 6
c = 4


b = 9
c = 4




240 and above


b = 9
c = 4


b = 9
c = 4


b = 9
c = 4




These markings define a steering wheel tyre:






—


having a nominal section width of 250,










—


having a nominal aspect ratio of 70,










—


of radial-ply structure (R),










—


having a nominal rim diameter of 405 mm, for which the code is 16, designed for the equipment of non-driven steering axles of agricultural tractors (FRONT),










—


having load capacities of 925 kg, corresponding to the load capacity index 105 shown in annex 4,










—


classified in the nominal speed category A6 (reference speed 30 km/h),










—


for fitting without an inner tube ‘tubeless’, and,










—


manufactured during the twenty-fifth week of the year 2006
(see paragraph 3.2 of the Regulation).




The positioning and order of the markings constituting the tyre designation are as follows:






(a)


the size designation, comprising the nominal section width, the nominal aspect ratio, the type-of-structure symbol (where applicable), the nominal rim diameter and, optionally the letters ‘FRONT’, must be grouped as shown in the above example: 250/70 R 16 FRONT;










(b)


the service description (the load index and the speed category symbol) is placed together near the size designation. It may either precede or follow it or be placed above or below it;










(c)


the symbol ‘TUBELESS’, the optional word ‘RADIAL’, the optional symbol ‘F-1’, and the date of manufacture may be at a distance from the size designation.




PART C:   IMPLEMENT TYRES
Example of the markings to be borne by types of tyres complying with this Regulation






Minimum heights of markings (mm)









Tyres of Nominal Section Width


TYRES OF RIM DIAMETER CODE




UP TO 12


13 TO 19,5


20 AND ABOVE




up to 130


b = 4
c = 4
d = 7


b = 6
c = 4
d = 12


b = 9
c = 4
d = 12




135 to 235


b = 6
c = 4
d = 12


b = 6
c = 4
d = 12


b = 9
c = 4
d = 12




240 and above


b = 9
c = 4
d = 12


b = 9
c = 4
d = 12


b = 9
c = 4
d = 12




These markings define an implement tyre:






—


having a nominal section width of 250,










—


having a nominal aspect ratio of 70,










—


of radial-ply structure (R),










—


having a nominal rim diameter of 508 mm, for which the code is 20,










—


designed primarily for the equipment of implements, agricultural machinery or agricultural trailers (IMP),










—


having load capacities of 690 kg corresponding to the load capacity index 95 shown in annex 4 when used on driven axles (traction application), as identified by the appropriate symbol,










—


having load capacities of 1 000 kg when used on non-driven axles (trailer application) corresponding to the load capacity index 108 shown in annex 4, as identified by the appropriate symbol,










—


both applications being classified in the nominal speed category A6 (reference speed 30 km/h),










—


for fitting without an inner tube ‘tubeless’, and










—


manufactured during the twenty-fifth week of the year 2006
(see paragraph 3.2 of the Regulation).




The positioning and order of the markings constituting the tyre designation are as follows:






(a)


the size designation, comprising the nominal section width, the nominal aspect ratio, the type-of-structure symbol (where applicable), the nominal rim diameter and optionally the letters ‘IMP’ must be grouped as shown in the above example: 250/70 R 20 IMP;










(b)


the service description (the load index and the speed category symbol) and the relevant type of application symbol are placed together near the size designation. They may either precede or follow it or be placed above or below it;










(c)


the symbol ‘TUBELESS’, I-3 if any, the optional word ‘RADIAL’, the optional word ‘IMPLEMENT’ and the date of manufacture may be at a distance from the size designation.




PART D:   TYRES FOR FORESTRY MACHINES
Example of the markings to be borne by types of tyres complying with this Regulation












MINIMUM HEIGHTS OF MARKINGS:


b: 9 mm


c: 4 mm




These markings define a tyre for forestry machines (LS):






(a)


having a nominal section width of 600,










(b)


having a nominal aspect ratio of 55,










(c)


of diagonal ply structure (-),










(d)


having a nominal rim diameter of 673 mm for which the code is 26,5,










(e)


having an intermediate tread (‘LS-2’),










(f)


having a load capacity of 3 750 kg, corresponding to load index 154 in Annex 4,










(g)


classified in the speed category A8 (reference speed 40 km/h),










(h)


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










(i)


manufactured during the twenty-fifth week of the year 2006 (see paragraph 3.2 of the Regulation).




The positioning and order of the markings constituting the tyre designation are as follows:






(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, must be grouped as shown in the above example: 600/55 – 26,5;










(b)


the inscription ‘LS’, followed by the number 1, 2, 3 or 4 as appropriate, is placed after the size designation, as shown in the above example: LS-2;










(c)


the service description (load index and the speed category symbol) is placed near the size designation. It may either precede or follow it or be placed above or below it;










(d)


the symbols ‘TUBELESS’ and the date of production may be at a distance from the size designation.









ANNEX 4

List of load capacity indices (LI) and corresponding maximum mass to be carried (kg)

(see paragraph 2.28)






LI


kg




1


46,2 




2


47,5 




3


48,7 




4


50 




5


51,5 




6


53 




7


54,5 




8


56 




9


58 




10


60 




11


61,5 




12


63 




13


65 




14


67 




15


69 




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


97,5 




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 




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 5

Theoretical rim, outer diameter and nominal section width of tyres of certain size designations


Table 1


Agricultural Steering Wheels — Normal and Low Section Sizes










Tyre size Designation


Theoretical rim width code (A1)


Nominal section Width (S1)
(mm)


Overall diameter (D)
(mm)


Nominal rim Diameter (d)
(mm)




4,00 - 9


3


112 


460 


229 




4,00 - 12


3


112 


535 


305 




4,00 - 15


3


112 


610 


381 




4,00 - 16


3


112 


630 


406 




4,00 - 19


3


112 


712 


483 




4,50 - 10


3


121 


505 


254 




4,50 - 16


3


122 


655 


406 




4,50 - 19


3


122 


736 


483 




5,00 - 10


3


130 


530 


254 




5,00 - 12


3


130 


580 


305 




5,00 - 15


4


140 


655 


381 




5,00 - 16


4


140 


680 


406 




5,50 - 16


4


150 


710 


406 




6,00 - 14


5


169 


688 


356 




6,00 - 16


4,5


165 


735 


406 




6,00 - 18


4


160 


790 


457 




6,00 - 19


4,5


165 


814 


483 




6,00 - 20


4,5


165 


840 


508 




6,50 - 10


4,5


175 


608 


254 




6,50 - 16


4,5


175 


760 


406 




6,50 - 20


4,5


175 


865 


508 




7,50 - 16


5,5


205 


805 


406 




7,50 - 18


5,5


205 


860 


457 




7,50 - 20


5,5


205 


915 


508 




8,00 - 16


5,5


211 


813 


406 




9,00 - 16


6


234 


855 


406 




9,50 - 20


7


254 


978 


508 




10,00 - 16


8


274 


895 


406 




11,00 - 16


10


315 


965 


406 




11,00 - 24


10


315 


1 170 


610 




Low Section Height





7,5L - 15


6


210 


745 


381 




8,25/85 - 15


6


210 


745 


381 




9,5L - 15


8


240 


785 


381 




9,5/85 - 15


8


240 


785 


381 




11L - 15


8


280 


815 


381 




11,5/75 - 15


8


280 


815 


381 




7,5L - 16


6


208 


746 


406 




11L - 16


8


279 


840 


406 




14L - 16,1


11


360 


985 


409 




14,0/80 - 16,1


11


360 


985 


409 




14,5/75 - 16,1


11


373 


940 


409 




16,5L - 16,1


14


419 


1 072 


409 




Notes:






1.


Agricultural steering wheels tyres are identified either by suffix ‘Front’ placed after the Tyre size designation (e.g. 4,00 - 9 Front) or by one of the following additional markings added to the Tyre sidewalls: ‘F–1’ or ‘F–2’.










2.


Tyres of radial structure are identified by means of the letter ‘R’ in place of ‘-’ (e.g. 4.00R9)





Table 2 (1 of 3)


Drive wheel Tyres for agricultural tractors — Normal Section Sizes












Tyre size Designation


Theoretical rim width code (A1)


Nominal section Width (S1)
(mm)


Overall Diameter (D)
(mm)


Nominal rim Diameter (d)
(mm)




Radial


Diagonal


Radial


Diagonal




4,00 - 7


3


 


112 


 


410 


178 




4,00 - 8


3


 


112 


 


435 


203 




4,00 - 9


3


 


112 


 


460 


229 




4,00-10


3


 


112 


 


485 


254 




4,00-12


3


 


112 


 


535 


305 




4,00-18


3


 


112 


 


690 


457 




4,00-12


3


 


121 


 


505 


254 




5,0 -10


4


 


135 


 


505 


254 




5,00-10


3


 


130 


 


530 


254 




5,00-12


4


 


145 


 


580 


305 




5,00-15


4


 


145 


 


645 


381 




6,00-12


4


 


160 


 


635 


305 




6,00-16


4


 


160 


 


735 


406 




6,5-15


5


 


167 


 


685 


381 




6,50-16


5


 


175 


 


760 


406 




7,50-18


5,5


 


205 


 


860 


457 




8,00-20


6


 


220 


 


965 


508 




5-12


4


 


127 


 


545 


305 




5-14


4


 


127 


 


595 


356 




5-26


4


 


127 


 


900 


660 




6-10


5


 


157 


 


550 


254 




6-12


5


 


157 


 


600 


305 




6-14


5


 


157 


 


650 


356 




7-14


5


 


173 


 


690 


356 




7-16


6


 


183 


 


740 


406 




8-16


6


 


201 


 


790 


406 




8-18


7


 


211 


 


840 


457 




7,2-20


6


 


183 


 


845 


508 




7,2-24


6


 


183 


 


945 


610 




7,2-30


6


 


183 


 


1 095 


762 




7,2-36


6


 


183 


 


1 250 


914 




7,2-40


6


 


183 


 


1 350 


1 016 




8,3-16


7


 


211 


 


790 


406 




8,3-20


7


 


211 


 


890 


508 




8,3-22


7


 


211 


 


940 


559 




8,3-24


7


211 


211 


985 


995 


610 




8,3-26


7


 


211 


 


1 045 


660 




8,3-28


7


 


211 


 


1 095 


711 




8,3-32


7


211 


211 


1 190 


1 195 


813 




8,3-36


7


211 


211 


1 290 


1 300 


914 




8,3-38


7


 


211 


 


1 350 


965 




8,3-42


7


211 


211 


1 440 


1 450 


1 067 




8,3-44


7


211 


211 


1 495 


1 500 


1 118 




9,5-16


8


 


241 


 


845 


406 




9,5-18


8


 


241 


 


895 


457 




9,5-20


8


241 


241 


940 


945 


508 




9,5-22


8


 


241 


 


995 


559 




9,5-24


8


241 


241 


1 040 


1 050 


610 




9,5-26


8


 


241 


 


1 100 


660 




9,5-28


8


241 


 


1 140 


 


711 




9,5-32


8


 


241 


 


1 250 


813 




9,5-36


8


241 


241 


1 345 


1 355 


914 




9,5-38


8


 


241 


 


1 405 


965 




9,5-42


8


 


241 


 


1 505 


1 067 




9,5-44


8


241 


241 


1 550 


1 555 


1 118 




9,5-48


8


241 


241 


1 650 


1 655 


1 219 








Table 2 (2 of 3)


Drive wheel Tyres for agricultural tractors — Normal Section Sizes












Tyre size Designation


Theoretical rim width code (A1)


Nominal section Width (S1)
(mm)


Overall Diameter (D)
(mm)


Nominal rim Diameter (d)
(mm)




Radial


Diagonal


Radial


Diagonal




11,2-18


10


 


284 


 


955 


457 




11,2-20


10


284 


284 


995 


1 005 


508 




11,2-24


10


284 


284 


1 095 


1 105 


610 




11,2-26


10


 


284 


 


1 155 


660 




11,2-28


10


284 


284 


1 200 


1 205 


711 




11,2-36


10


284 


284 


1 400 


1 410 


914 




11,2-38


10


284 


284 


1 455 


1 460 


965 




11,2-42


10


284 


 


1 555 


 


1 067 




11,2-44


10


284 


 


1 610 


 


1 118 




11,2-48


10


284 


 


1 710 


 


1 219 




12,4-16


11


 


315 


 


956 


406 




12,4-20


11


315 


 


1 045 


 


508 




12,4-24


11


315 


315 


1 145 


1 160 


610 




12,4-26


11


 


315 


 


1 210 


660 




12,4-28


11


315 


315 


1 250 


1 260 


711 




12,4-30


11


 


315 


 


1 310 


762 




12,4-32


11


315 


315 


1 350 


1 360 


813 




12,4-36


11


315 


315 


1 450 


1 465 


914 




12,4-38


11


315 


315 


1 500 


1 515 


965 




12,4-42


11


 


315 


 


1 615 


1 067 




12,4-46


11


315 


 


1 705 


 


1 168 




12,4-52


11


315 


 


1 860 


 


1 321 




13,6-16


12


 


345 


 


1 005 


406 




13,6-24


12


345 


345 


1 190 


1 210 


610 




13,6-26


12


345 


345 


1 260 


1 260 


660 




13,6-28


12


345 


345 


1 295 


1 310 


711 




13,6-36


12


345 


345 


1 500 


1 515 


914 




13,6-38


12


345 


345 


1 550 


1 565 


965 




13,6-48


12


345 


 


1 805 


 


1 219 




13,9-36


12


 


353 


 


1 478 


965 




14,9/80-24


12


 


368 


 


1 215 


610 




14,9-20


13


 


378 


 


1 165 


508 




14,9-24


13


378 


378 


1 245 


1 265 


610 




14,9-26


13


378 


378 


1 295 


1 315 


660 




14,9-28


13


378 


378 


1 350 


1 365 


711 




14,9-30


13


378 


378 


1 400 


1 415 


762 




14,9-38


13


378 


378 


1 600 


1 615 


965 




14,9-46


13


378 


 


1 824 


 


1 168 




15,5-38


14


394 


394 


1 565 


1 570 


965 




16,9-24


15


429 


429 


1 320 


1 335 


610 




16,9-26


15


429 


429 


1 370 


1 385 


660 




16,9-28


15


429 


429 


1 420 


1 435 


711 




16,9-30


15


429 


429 


1 475 


1 485 


762 




16,9-34


15


429 


429 


1 575 


1 585 


864 




16,9-38


15


429 


429 


1 675 


1 690 


965 




16,9-42


15


429 


 


1 775 


 


1 067 




18,4-16.1


16


 


467 


 


1 137 


409 




18,4-24


16


467 


467 


1 395 


1 400 


610 




18,4-26


16


467 


467 


1 440 


1 450 


660 




18,4-28


16


467 


467 


1 490 


1 501 


711 




18,4-30


16


467 


467 


1 545 


1 550 


762 




18,4-34


16


467 


467 


1 645 


1 650 


864 




18,4-38


16


467 


467 


1 750 


1 750 


965 




18,4-42


16


467 


467 


1 850 


1 850 


1 067 




18,4-46


16


467 


 


1 958 


 


1 168 








Table 2 (3 of 3)


Drive wheel Tyres for agricultural tractors — Normal and Low Section Sizes












Tyre size Designation


Theoretical rim width code (A1)


Nominal section Width (S1)
(mm)


Overall Diameter (D)
(mm)


Nominal rim Diameter (d)
(mm)




Radial


Diagonal


Radial


Diagonal




20,8-34


18


528 


528 


1 735 


1 735 


864 




20,8-38


18


528 


528 


1 835 


1 835 


965 




20,8-42


18


528 


528 


1 935 


1 935 


1 067 




23,1-26


20


587 


587 


1 605 


1 605 


660 




23,1-30


20


587 


587 


1 700 


1 705 


762 




23,1-34


20


587 


587 


1 800 


1 805 


864 




24,5-32


21


622 


622 


1 800 


1 805 


813 




Low Section Height





7,5L-15


6


 


210 


 


745 


381 




14,9LR-20


13


378 


 


1 100 


 


508 




17,5L-24


15


445 


445 


1 241 


1 265 


610 




19,5L-24


17


495 


495 


1 314 


1 339 


610 




21L-24


18


 


533 


 


1 402 


610 




28,1-26


25


 


714 


 


1 615 


660 




28L-26


25


719 


714 


1 607 


1 615 


660 




30,5L-32


27


775 


775 


1 820 


1 820 


813 




Notes:






1.


The Tyre size designation may be suplemented by an additional figure: ex: 23,1/18 - 26
instead of 23,1 - 26.










2.


Tyres of radial structure are identified by means of the letter ‘R’ in place of ‘-’ (e.g. 23.1R26).










3.


Coefficient for the calculation of the overall width: + 8 %





Table 3


Drive wheel Tyres for agricultural tractors — Low Section Series










Tyre size Designation


Theoretical rim width code (A1)


Nominal section Width (S1)
(mm)


Overall diameter (D)
(mm)


Nominal rim Diameter (d)
(mm)




11,2/78-28


10


296 


1 180 


711 




12,4/78-28


11


327 


1 240 


711 




12,4/78-36


11


327 


1 440 


914 




13,6/78-28


12


367 


1 285 


711 




13,6/78-36


12


367 


1 490 


914 




14,9/78-28


13


400 


1 345 


711 




16,9/78-28


15


452 


1 410 


711 




16,9/78-30


15


452 


1 460 


762 




16,9/78-34


15


452 


1 560 


864 




16,9/78-38


15


452 


1 665 


965 




18,4/78-30


16


490 


1 525 


762 




18,4/78-38


16


490 


1 730 


965 








Table 4


Drive wheel Tyres for agricultural tractors — Low Section Series










Tyre size Designation


Theoretical rim width code (A1)


Nominal section Width (S1)
(mm)


Overall diameter (D)
(mm)


Nominal rim Diameter (d)
(mm)




300/70R20


9


295 


952 


508 




320/70R20


10


319 


982 


508 




320/70R24


10


319 


1 094 


610 




320/70R28


10


319 


1 189 


711 




360/70R20


11


357 


1 042 


508 




360/70R24


11


357 


1 152 


610 




360/70R28


11


357 


1 251 


711 




380/70R20


12


380 


1 082 


508 




380/70R24


12


380 


1 190 


610 




380/70R28


12


380 


1 293 


711 




420/70R24


13


418 


1 248 


610 




420/70R28


13


418 


1 349 


711 




420/70R30


13


418 


1 398 


762 




480/70R24


15


479 


1 316 


610 




480/70R26


15


479 


1 372 


660 




480/70R28


15


479 


1 421 


711 




480/70R30


15


479 


1 478 


762 




480/70R34


15


479 


1 580 


864 




480/70R38


15


479 


1 681 


965 




520/70R26


16


516 


1 456 


660 




520/70R30


16


516 


1 536 


762 




520/70R34


16


516 


1 640 


864 




520/70R38


16


516 


1 749 


965 




580/70R38


18


577 


1 827 


965 








Table 5


Agricultural Implement Tyres — Normal section Sizes











Tyre size designation


Theoretical rim width code (A1)


Nominal section width (S1)


Overall diameter (D)


Nominal rim diameter (d)




 


(*)




(mm)


(mm)


(mm)




125 - 15 IMP


3,5


127 


590 


 


381 




140 - 6 IMP


4,5


135 


315 


 


152 




165 - 15 IMP


4,5


167 


650 


 


381 




2,50 - 4 IMP


1,75


68 


225 


 


102 




2,75 - 4 IMP


1,75


70 


234 


 


102 




2,50 - 8 IMP


1,5


68 


338 


 


203 




3,00 - 4 IMP


2,5


90 


265 


 


102 




3,00 - 8 IMP


2,5


90 


367 


 


203 




3,00 - 10 IMP


2,5


90 


418 


 


254 




3,25 - 8 IMP


2,10


84 


366 


 


203 




3,25 - 16 IMP


1,85


88 


590 


 


406 




4,10/3,50-4 IMP


2,10


89 


272 


 


101 




3,50 - 5 IMP


3


95 


292 


 


127 




3,50 - 6 IMP


2,5


100 


343 


 


152 




3,50 - 8 IMP


2,5


100 


393 


 


203 




3,50 - 16 IMP


1,85


92 


590 


 


406 




4,00 - 4 IMP


3


114 


313 


 


102 




4,00 - 5 IMP


3


102 


310 


 


127 




4,00 - 6 IMP


3


114 


374 


 


152 




4,00 - 8 IMP


3


112 


418 


425 


203 




4,00 - 9 IMP


3


112 


443 


460 


229 




4,0 - 10 IMP


3


114 


455 


465 


254 




4,00 - 10 IMP


3


114 


465 


475 


254 




4,00 - 12 IMP


3


112 


519 


536 


305 




4,00 - 15 IMP


3


112 


595 


612 


381 




4,00 - 16 IMP


3


114 


608 


 


406 




4,00 - 18 IMP


3


112 


672 


688 


457 




4,00 - 19 IMP


3


114 


672 


 


483 




4,00 - 21 IMP


3


112 


694 


 


533 




4,00/4,50 - 21 IMP


 


110 


765 


 


533 




4,10 - 4 IMP


3,25


102 


765 


 


102 




4,10 - 6 IMP


3,25


102 


268 


 


152 




4,50 - 9 IMP


3


124 


319 


 


229 




4,50 - 14 IMP


3


124 


466 


 


356 




4,50 - 16 IMP


3


123 


593 


 


406 




4,50 - 19 IMP


3


124 


720 


733 


483 




4,80 - 8 IMP


3,75


121 


423 


449 


203 




5,00 - 8 IMP


4


145 


467 


 


203 




5,00 - 9 IMP


3,5


141 


497 


 


229 




5,0 - 10 IMP


4


145 


505 


517 


254 




5,0 - 12 IMP


4


145 


566 


 


305 




5,00 - 12 IMP


4


145 


567 


580 


305 




5,00 - 14 IMP


4


145 


618 


631 


356 




5,0 - 15 IMP


4


145 


642 


 


381 




5,00 - 15 IMP


3


130 


639 


655 


381 




5,00 - 16 IMP


4


145 


669 


 


406 




5,00/5,25 - 21 IMP


3


136 


824 


 


533 




5,50 - 16 IMP


4


150 


685 


703 


406 




5,70 - 12 IMP


4,5


146 


570 


 


305 




5,70 - 15 IMP


4,5


146 


647 


 


381 




5,90 - 15 IMP


4


150 


665 


681 


381 




6 - 6 IMP


4


145 


425 


 


152 




6,00 - 9 IMP


4,5


169 


543 


556 


229 




6 - 12 IMP


5


145 


585 


 


305 




6,0 - 12 IMP


5


155 


569 


 


305 




6,00 - 12 IMP


5


152 


579 


 


305 




6,00 - 16 IMP


4


158 


712 


729 


406 




6,00 - 19 IMP


4,5


169 


810 


 


483 




6,00 - 20 IMP


4,5


169 


830 


 


508 




6,40 - 15 IMP


4,5


163 


684 


 


381 




6,5 - 15 IMP


5


163 


674 


 


381 




6,50 - 10 IMP


5


178 


597 


 


254 




6,50 - 16 IMP


4,5


173 


735 


754 


406 




6,50 - 20 IMP


5


176 


850 


 


508 




6,70 - 15 IMP


4,5


182 


704 


720 


381 




6,90 - 9 IMP


5,5


175 


545 


 


229 




7,00- 12 IMP


5


187 


667 


685 


305 




7,00 - 14 IMP


5


170 


691 


 


356 




7,00 - 15 IMP


5,5


200 


744 


 


381 




7,00 - 16 IMP


5,5


200 


769 


 


406 




7,00 - 18 IMP


5,5


200 


820 


 


457 




7,00 - 19 IMP


5,5


200 


845 


 


483 




7,50 - 10 IMP


6


214 


634 


649 


254 




7,50 - 14 IMP


5,5


194 


686 


 


356 




7,50 - 15 IMP


6


215 


808 


 


381 




7,50 - 16 IMP


5,5


202 


785 


801 


406 




7,50 - 18 IMP


5,5


202 


836 


852 


457 




7,50 - 20 IMP


5,5


202 


887 


903 


508 




7,50 - 24 IMP


5,5


202 


989 


1 013 


610 




7,60 - 15 IMP


5,5


193 


734 


751 


381 




8 - 16 IMP


6


211 


795 


 


406 




8,00 - 6 IMP


7


203 


452 


 


152 




8,00 - 12 IMP


5


214 


710 


 


305 




8,00 - 16 IMP


6


206 


808 


 


406 




8,00 - 19 IMP


6


214 


888 


 


483 




8,00 - 20 IMP


6


214 


945 


 


508 




8,25 - 15 IMP


6,5


237 


835 


 


381 




8,25 - 16 IMP


6


229 


832 


 


406 




8,25 - 20 IMP


6


229 


934 


 


508 




9,00 - 10 IMP


6


234 


696 


 


254 




9,00 - 13 IMP


5,5


247 


814 


 


330 




9,00- 15 IMP


5,5


247 


850 


 


381 




9,00 - 16 IMP


6


234 


48 


 


406 




9,00 - 24 IMP


8


272 


1 094 


 


610 




10,00 - 12 IMP


6,5


262 


790 


 


305 




10,00 - 15 IMP


8


274 


853 


 


381 




10,00 - 16 IMP


8


274 


895 


 


406 




10,50 - 16 IMP


6,5


280 


955 


 


406 




11,00 - 12 IMP


6,5


277 


835 


 


305 




11,00 - 16 IMP


6,5


277 


937 


 


406 




11,0 - 20 IMP


9


285 


950 


 


508 




11,25 - 24 IMP


10


325 


1 171 


 


610 




11,25 - 28 IMP


10


325 


1 273 


 


711 




11,5 - 24 IMP


10


305 


1 070 


 


610 




13,50 - 16,1 IMP


11


353 


1 021 


1 043 


409 




14,0 - 24 IMP


12


370 


1 170 


 


610 




15,0 - 24 IMP


13


400 


1 210 


 


610 




15,0 - 28 IMP


13


400 


1 310 


 


711 




17,0 - 28 IMP


15


455 


1 390 


 


711 




17,0 - 30 IMP


15


455 


1 440 


 


762 




18,5 - 34 IMP


16


490 


1 600 


 


864 




20 - 20 IMP


14


520 


1 270 


 


508 




190-8 IMP


5,50


182 


430 


 


203 




Notes:






1.


The suffix ‘IMP’ may be replaced by the wording ‘IMPLEMENT’ on the tyre sidewall.










2.


Tyres of radial structure are identified by means of the letter ‘R’ in place of ‘-’ (e.g. 7.5 L R 15).










3.


Overall diameters (D) in column (*) apply to tyres marked with classification code ‘I-3’ — see paragraph 3.1.8.2.





Table 6 (1 of 2)


Agricultural Implement Tyres — Low Section Sizes











Tyre size designation


Theoretical rim width code (A1)


Nominal section width (S1)
(mm)


Overall diameter (D)


Nominal rim diameter (d)
(mm)




 


(*)




(mm)




7,5 L - 15 IMP


6


210 


745 


 


381 




8,5L - 14 IMP


6


216 


721 


735 


356 




9,5L - 14 IMP


7


241 


741 


757 


356 




9,5L - 15 IMP


7


241 


767 


782 


381 




11L - 14 IMP


8


279 


752 


770 


356 




11L - 15 IMP


8


279 


777 


796 


381 




11L - 16 IMP


8


279 


803 


821 


406 




12,5L - 15 IMP


10


318 


823 


845 


381 




12,5L - 16 IMP


10


318 


848 


870 


406 




14 L - 16,1 IMP


11


356 


940 


 


409 




16,5L - 16,1 IMP


14


419 


1 024 


1 046 


409 




19 L - 16,1 IMP


16


483 


1 087 


 


409 




21,5 L - 16,1 IMP


18


546 


1 130 


 


409 




Notes:






1.


The suffix ‘IMP’ may be replaced by the wording ‘IMPLEMENT’ on the Tyre sidewall.










2.


Tyres of radial structure are identified by means of the letter ‘R’ in place of ‘-’ (e.g. 7.5 L R 15).










3.


Overall diameters (D) in column (*) apply to tyres marked with classification code ‘I 3’ — see paragraph 3.1.8.2.





Table 6 (2 of 2)


Agricultural Implement Tyres — Low Section Sizes











Tyre size Designation


Theoretical rim width code (A1)


Nominal section Width (S1)
(mm)


Overall diameter (D)
(mm)


Nominal rim Diameter (d)
(mm)




 


(*)




05/50 - 10 IMP


7


211 


450 


 


254 




19,0/45 - 17 IMP


16


491 


866 


 


432 




15,0/55 - 17 IMP


13


391 


850 


872 


432 




10,5/65 - 16 IMP


9


274 


755 


 


406 




11,0/60 - 16 IMP


9


281 


742 


 


406 




11,0/65 - 12 IMP


9


281 


670 


692 


305 




13,0/65 - 18 IMP


11


336 


890 


 


457 




13,0/70 - 16 IMP


11


337 


890 


 


406 




14,0/65 - 16 IMP


11


353 


870 


 


406 




9,0/70 - 16 IMP


7


226 


725 


 


406 




11,5/70 - 16 IMP


9


290 


815 


 


406 




11,5/70 - 18 IMP


9


290 


865 


 


457 




15,0/70 - 18 IMP


13


391 


990 


 


457 




16,0/70 - 20 IMP


14


418 


1 075 


1 097 


508 




16,5/70 - 22.5 IMP


13


417 


1 158 


 


572 




20,0/70 - 508 IMP


16


508 


1 220 


 


508 




8,0/75 - 15 IMP


6,5


199 


710 


 


381 




9,0/75 - 16 IMP


7


226 


749 


770 


406 




10,0/75 - 12 IMP


9


264 


685 


 


305 




10,0 - 15.3 IMP


9


258 


785 


 


389 




10,0/75 - 15.3 IMP


9


264 


760 


780 


389 




10,0/75 - 16 IMP


9


264 


805 


 


406 




12,0/75 - 18 IMP


9


299 


915 


937 


457 




13,0/75 - 16 IMP


11


336 


900 


 


406 




13,5/75 - 430,9 IMP


11


345 


945 


 


431 




14,5/75 - 20 IMP


12


372 


1 060 


 


508 




6,5/80 - 12 IMP


5


163 


569 


588 


305 




6,5/80 - 15 IMP


5


163 


645 


663 


381 




8,50 - 12 IMP


7


235 


715 


 


305 




10,0/80 - 12 IMP


9


264 


710 


730 


305 




10 - 18 IMP


9


260 


875 


 


457 




10,5/80 - 18 IMP


9


274 


885 


907 


457 




11,5 - 15,3 IMP


9


295 


860 


 


389 




11,5/80 - 15,3 IMP


9


290 


845 


867 


389 




12,5/80 - 15,3 IMP


9


307 


889 


 


389 




12,5/80 - 18 IMP


9


308 


965 


987 


457 




14,5/80 - 18 IMP


12


372 


1 060 


1 082 


457 




15,5/80 - 24 IMP


13


394 


1 240 


1 262 


610 




17,0/80 - 508 IMP


13


426 


1 200 


 


508 




19,5/80 - 20 IMP


16


499 


1 300 


 


508 




21,0/80 - 20 IMP


16


525 


1 362 


 


508 




5,5/85 - 9 IMP


4


145 


475 


 


229 




10,5/85 - 15,3 IMP


9


274 


792 


 


389 




13,5/85 - 28 IMP


11


345 


1 293 


 


711 




16,5/85 - 24 IMP


13


417 


1 322 


1 344 


610 




16,5/85 - 28 IMP


13


417 


1 423 


1 445 


711 




Notes:






1.


The suffix ‘IMP’ may be replaced by the wording ‘IMPLEMENT’ on the Tyre sidewall.










2.


Tyres of radial structure are identified by means of the letter ‘R’ in place of ‘-’ (e.g. 205/50R10)










3.


Overall diameters (D) in column (*) apply to tyres marked with classification code ‘I 3’ — see paragraph 3.1.8.2.





Table 7 (1 of 2)


Agricultural High Flotation Tyres










Tyre size Designation


Theoretical rim width code (A1)


Nominal section Width (S1)
(mm)


Overall diameter (D)
(mm)


Nominal rim Diameter (d)
(mm)




9×3,50 - 4


2,75


91 


229 


101 




11×4,00 - 4


3,25


102 


280 


101 




11×4,00 - 5


3


104 


272 


127 




11×7 - 4


6


185 


270 


101 




12×4,00 - 5


3


112 


298 


127 




13×5,00 - 6


3,5


122 


320 


152 




13×6,00-6


5


154 


330 


152 




13×6,00 - 8


5


154 


330 


203 




13×6,50 - 6


5


163 


330 


152 




14×4,50-6


3,5


113 


356 


152 




14×5,00 - 6


4


127 


347 


152 




14×6,00 - 6


4,5


157 


340 


152 




15×6,00 - 6


4,5


155 


366 


152 




16×4,50 - 9


3


105 


405 


229 




16×5,50 - 8


4,25


142 


414 


203 




16×6,50 - 8


5,375


165 


405 


203 




16×7,50 - 8


5,375


188 


411 


203 




17×8,00 - 8


7


203 


438 


203 




17×8,00 - 12


7


203 


432 


305 




18×6,50 - 8


5


163 


457 


203 




18×7,00 - 8


5,5


178 


450 


203 




18×7,50-8


6


191 


457 


203 




18×8,50 - 8


7


214 


450 


203 




18×9,50 - 8


7


235 


462 


203 




19×7,50 - 8


5,5


180 


480 


203 




19×8,00 - 10


7


203 


483 


254 




19×9,50-8


7,5


240 


483 


203 




19×10,00 - 8


8,5


254 


483 


203 




20×8,00-8


6,5


204 


508 


203 




20×8,00 - 10


7


203 


500 


254 




20×9,00-8


7


227 


508 


203 




20×10,00 - 8


8


254 


508 


203 




20×10,00 - 10


8,5


254 


508 


254 




20,5×8,00 - 10


6


208 


526 


254 




21×7,00-10


5,5


177 


533 


254 




21×8,00 - 10


7


203 


525 


254 




AT21×7 - 10


5,5


177 


533 


254 




21×11,00 - 8


8,5


282 


518 


203 




21×11,00 - 10


9


279 


525 


254 




22×8,00 - 10


6


196 


556 


254 




22×8,50 - 12


7


216 


551 


305 




AT22×9 - 8


7


227 


559 


203 




22×10,00 - 8


7


244 


572 


203 




22×10,00 - 10


8,5


254 


559 


254 




22×11,00 - 8


8,5


284 


546 


203 




22×11,00 - 10


8,5


254 


559 


254 




AT23×7 - 10


5,5


175 


587 


254 




AT23×8 - 11


6,5


204 


584 


279 




23×8,50 - 12


7


214 


575 


305 




23×9,00 - 12


7,5


229 


575 


305 




23×9,50-12


7


235 


577 


305 




23×10,50 - 12


8,5


264 


579 


305 




AT24×8 - 11


6,5


204 


610 


279 




AT24×9 - 11


7


227 


610 


279 




AT24×10 - 11


8


254 


610 


279 




24×8,50 - 12


7


213 


602 


305 




24×8,50 - 14


7


213 


602 


356 




24×11,00 - 10


8,5


254 


607 


254 




24×12,00-12


9,5


304 


610 


305 




24×13,00 - 12


10,5


325 


592 


305 




25×7,50 - 15


5,5


191 


640 


381 




AT25×8 - 12


6,5


204 


635 


305 




25×8,00-12


6,5


203 


635 


305 




25×8,50 - 14


7


213 


645 


356 




25×10,00-12


8


254 


635 


305 




25×10,50 - 15


8


267 


640 


381 




25×11,00-12


9


279 


635 


305 




AT25×11 - 9


9


281 


635 


229 




AT25×11 - 10


8,5


262 


645 


254 








Table 7 (2 of 2)


Agricultural High Flotation Tyres










Tyre size Designation


Theoretical rim width code (A1)


Nominal section Width (S1)
(mm)


Overall diameter (D)
(mm)


Nominal rim Diameter (d)
(mm)




25×12,00 - 9


10


305 


635 


229 




25×12,50 - 15


10


310 


640 


381 




26×10,00 - 12


10


310 


660 


305 




26×12,00 - 12


10


310 


660 


305 




26×14,00 - 12


12


356 


660 


305 




27×8,50 - 15


7


214 


680 


381 




27×9,50 - 15


7


229 


686 


381 




27×10,50 - 15


8,5


259 


691 


381 




27×10 - 15.3


9


261 


685 


389 




28×9,00 - 15


7


234 


710 


381 




28×13 - 15


11,5


330 


711 


381 




29×12,00 - 15


10


310 


742 


381 




29×12,50 - 15


10


310 


742 


381 




29×13,50 - 15


10


351 


742 


381 




31×11,50 - 15


8


301 


793 


381 




31×12,50 - 15


10


310 


792 


381 




31×13,50 - 15


10


351 


782 


381 




31×13,5 - 15


10


351 


782 


381 




31×15,50 - 15


13


391 


792 


381 




31×15,5 - 15


13


391 


792 


381 




33×12,50 - 15


10


310 


843 


381 




33×15,50 - 15


13


391 


843 


381 




36×13,50 - 15


10


351 


909 


381 




38×14,00 - 20


11


356 


991 


508 




38×18,00 - 20


14


457 


991 


508 




38×20,00 - 16.1


16


488 


991 


409 




41×14,00 - 20


11


356 


1 067 


508 




42×25,00 - 20


20,5


622 


1 080 


508 




43×13,50 - 22


10


360 


1 102 


559 




44×18,00 - 20


14


457 


1 143 


508 




44×41,00 - 20


36


991 


1 143 


508 




48×20,00 - 24


15


457 


1 245 


610 




48×25,00 - 20


20,5


635 


1 245 


508 




48×31,00 - 20


26


775 


1 245 


508 




54×31,00 - 26


26


775 


1 397 


660 




66×43,00 - 25


36


1 054 


1 702 


635 




66×43,00 - 26


36


1 054 


1 702 


660 




66×44,00 - 25


36


1 118 


1 702 


635 




67×34,00 - 25


30


864 


1 727 


635 




67×34,00 - 26


30


864 


1 727 


660 




67×34,00 - 30


30


864 


1 727 


762 




68×50,00 - 32


44


1 270 


1 753 


813 




VA73×44,00 - 32


36


1 118 


1 880 


813 




DH73×44,00 - 32


36


1 118 


1 880 


813 




DH73×50,00-32


44


1 270 


1 880 


813 




Notes:






1.


These Tyres may be classified in categories of use ‘Tractor Drive Wheels’ or ‘Implement’.










2.


Implement Tyres are identified either by suffix ‘IMP’ placed after the Tyre size designation (e.g. 11×4.00 - 4 IMP)or by the word ‘IMPLEMENT’ marked on the Tyre sidewalls.










3.


Tyres of radial structure are identified by means of the letter ‘R’ in place of ‘-’ (e.g. 11×4.00 R 4).










4.


Coefficient ‘b’ for the calculation of the Overall diameter Dmax:






(a)


1,12 for tyres with Nominal rim Diameter (d) less than 380 mm;










(b)


1,10 for tyres with Nominal rim Diameter (d) 381 mm and above.













ANNEX 6

TEST METHOD FOR MEASURING TYRE DIMENSIONS









1.


The tyre shall be mounted on the measuring rim specified by the manufacturer and is inflated to a pressure specified by the manufacturer.












1.1.


To seat the beads do not exceed the inflation pressure marked on the tyre sidewalls.












1.2.


Having properly seated tyre beads on the rim, adjust the pressure to the value specified for tyre measurements.












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.












4.


The overall width is measured by calliper at six equally-paced 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).









ANNEX 7

VARIATION OF LOAD CAPACITY WITH SPEED

(see paragraphs 2.30 and 2.31)
PART A:   DRIVE WHEEL TYRES FOR AGRICULTURAL TRACTORS
Applicable to tyres classified with categories of use: ‘Tractor drive wheel’
                     
(see paragraph 2.20)

Variation of load carrying capacity (%)












Speed
(km/h)


Speed category symbol


 


 




A2


A6 (+)


A8 (+)


D (+)


(1)




10 


[0]


+40 


+50 


+50 


 


+58 




15 


–6 


+30 


+34 


+34 


+35 




20 


–11 


+20 


+23 


+23 


+27 




25 


–16 


+7 


+11 


+18,5 


+20 




30 


–20 


[0]


+7 


+15 


+14 




35 


–24 


–10 


+3 


+12 


+10 




40 


–27 


–20 


[0]


+9,5 


+6 




45 


—


—


–4 


+7 


+2 




50 


—


—


–9 


+5 


[0]




55 


—


—


—


+3 


—




60 


—


—


—


+1,5 


—




65 


—


—


—


[0]


—




70 


—


—


—


–9 


—




The above load/speed variations table does not apply to IF and VF Tyres.
The above load/speed variations apply when the tyre is not subjected to sustained high torque service.








(+)


For field applications with sustained high torque service the values shown in the line 30 km/h apply.












(1)


These percentages apply only in case of tyres listed in annex 5, Table 7 marked with speed category symbol ‘B’.




PART B:   STEERING WHEEL TYRES FOR AGRICULTURAL AND FORESTRY TRACTORS
Applicable to tyres classified with category of use ‘Tractor steering wheels’ and marked ‘Front’ or ‘F-1’ or ‘F-2’
                     
(see paragraph 2.21)

Variation of load carrying capacity (%)

(see paragraphs 2.30 and 2.31)







Speed
(km/h)


Speed category symbol




A6


A8




10 


+50 


+67 




15 


+43 


+50 




20 


+35 


+39 




25 


+15 


+28 




30 


[0]


+11 




35 


–10 


+4 




40 


–20 


[0]




45 


—


–7 




PART C:   IMPLEMENT TYRES
Applicable to tyres classified with categories of use: ‘Implement’ and marked ‘IMP’ or ‘IMPLEMENT’
                     
(see paragraph 2.22)

Variation of load carrying capacity (%)

(see paragraphs 2.30 and 2.31)











Speed
(km/h)


Speed category symbol


 


 




A4


A6


A8


D


(1)




10 


+20 


+29 


+40 


+80 


 


+58 




15 


+12 


+21 


+33 


+73 


+35 




20 


[0]


+14 


+26 


+65 


+27 




25 


–2 


+7 


+19 


+58 


+20 




30 


–5 


[0]


+12 


+51 


+14 




35 


 


–5 


+5 


+44 


+10 




40 


 


–10 


[0]


+36 


+6 




45 


 


 


–5 


+29 


+2 




50 


 


 


–10 


+21 


[0]




55 


 


 


 


+14 


 




60 


 


 


 


+7 


 




65 


 


 


 


[0]


 




70 


 


 


 


–9 


 




The above load/speed variations apply when the tyre is not subjected to sustained high torque service.








(1)


These percentages apply only in case of tyres listed in annex 5, Table 7 marked with speed category symbol ‘B’.




PART D:   TYRES FOR FORESTRY MACHINES
Applicable to tyres classified with categories of use: ‘Forestry machines’
                     
(see paragraph 2.41)

Variation of load carrying capacity (per cent) for tyres marked with speed category symbol A8








Service Condition


Speed
(km/h)


per cent




Road service


20 


23 




30 


7 




40 


[0]









ANNEX 8

Test procedure to assess tyre resistance to bursting

1.   PREPARING THE TYRE








1.1.


Mount a new tyre on the test equipment. Wheels used for the test shall be suitable to withstand, with no deformation, the highest value of pressure achievable during the test.












1.2.


Carefully centre the tyre beads on the retention device and adjust the outer distance of the tyre beads to a value corresponding to the width of the rim specified by the manufacturer pursuant to paragraph 4.1.10 of this Regulation.












1.3.


Fill the tyre with water taking care that all the air inside the tyre is expelled.




2.   TEST PROCEDURE








2.1.


Activate the apparatus and increase the pressure of the water inside the tyre in order to reach progressively the limit given by two and half times the pressure specified by the tyre manufacturer pursuant to paragraph 4.1.12 of this Regulation;












2.1.1.


in no case, however, the limit value shall be lower than 6 bar (600 kPa) or higher than 10 bar (1 000 kPa);












2.2.


Maintain constant the value of the pressure for at least 10 minutes.












2.3.


Decrease, progressively, the pressure of the water to zero and drain the tyre.












2.4.


Whilst the pressure of the water inside the tyre is higher than the ambient pressure, nobody shall stand inside the test room, that shall be safely locked.




3.   EQUIVALENT TEST METHODS
If a method other than that described above is used, its equivalence must be demonstrated.





ANNEX 9

LOAD/SPEED TEST PROCEDURE

1.   SCOPE AND RANGE OF APPLICATION








1.1.


This test procedure is applicable for new tyres marked with speed catogory symbol ‘D’.












1.2.


It serves the purpose to assess the suitability of the tyre for the claimed performances.




2.   PREPARING THE TYRE








2.1.


Mount new tyres on the test rim specified by the manufacturer pursuant to paragraph 4.1.10 of this Regulation.












2.1.1.


To seat the beads do not exceed the maximum pressure marked on the tyre sidewalls.












2.2.


Use a new inner tube when testing tyres with inner tubes (i.e. tyres not bearing the marking ‘Tubeless’).












2.3.


With the tyre beads properly seated on the rim, inflate the tyre to the pressure corresponding to the test pressure specified by the tyre manufacturer for the type of test programme, pursuant to paragraph 4.1.15 of this Regulation.












2.4.


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












2.5.


Readjust the tyre pressure to that specified in paragraph 2.3 above.












2.6.


On request of the tyre manufacturer proceed with the test programme as specified in either of the following paragraphs:






 


test procedure in a laboratory on a test drum (paragraph 3 below), or










 


test procedure on a road using a trailer (paragraph 4).








3.   TEST PROCEDURE ON A TEST DRUM








3.1.


Mount the tyre and wheel assembly on the test axle and press it against the outer face of a smooth power-driven test drum of at least 1 700 mm ± 1 per cent in diameter having a surface at least as wide as the tyre tread.












3.1.1.


Drum widths narrower than the tyre tread pattern may be used if the tyre manufacturer agrees.












3.2.


Test drum speed: 20 km/h.












3.3.


Apply to test axle a series of masses in accordance with the load/speed test programme shown in paragraph 3.4 below, with reference to the test load which equates:






3.3.1.


the mass corresponding to load index marked on the tyre in case of tyres marked with speed symbol D.
















3.4.


Load/speed test programme:








Tyre speed category symbol


test step


percentage of the test load


duration (hours)




D


1


66  %


7 




2


84  %


16 




3


101  %


24 
















3.4.1.


In case of a test drum diameter larger than 1 700 mm ± 1 per cent, the above ‘percentage of test load’ shall be increased as follows:
F1 = K × F2
where 









R1



is the diameter of test drum, in millimeter




R2



is the diameter of the reference test drum of 1 700 mm




rT



is the tyre outer diameter (see paragraph 6.2 of this Regulation), in millimeter




F1



is the percentage of load to be applied for the test drum




F2



is the percentage of load, as per above table, to be applied for reference test drum of 1 700 mm




Example:


K = 1 for a test drum diameter of 1 700 mm;




In case of a test drum diameter of 3 000 mm and a tyre diameter of 1 500 mm:

















3.5.


The tyre pressure must not be corrected throughout the test and the test load must be kept constant throughout each of the three test steps.












3.6.


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












3.7.


The load/speed test programme must be carried out without interruption.




4.   TEST PROCEDURE ON A TRAILER








4.1.


Mount two new tyres of the same type on a trailer












4.2.


Apply on the trailer a mass in order that each tyre be equally loaded with a test load corresponding to the load carrying capacity allowed for that tyre type at 15 km/h (see load variations in annex 7).












4.3.


Run the trailer at a constant speed of 15 km/h ± 1 km/h for 48 hours.












4.3.1.


Temporary interruptions are allowed, but they must be compensated by an additional run-in of 5 min for every 20 minutes of interruption.












4.4.


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












4.5.


During the test the ambient temperature shall be between 5 °C and 30 °C or at another temperature if the manufacturer so agrees.




5.   EQUIVALENT TEST METHODS
If a method other than those described above is used, its equivalence must be demonstrated.





ANNEX 10

TYRE CLASSIFICATION CODE

(Optional marking)






Classification code


Nomenclature




F-1


Agricultural tractor steering wheel tyres: single rib tread




F-2


Agricultural tractor steering wheel tyres: multiple rib tread




F-3


Steering wheel tyres: industrial service (construction application)




 


 




G-1


Garden tractor tyres (implement tyres): traction service




G-2


Garden tractor tyres (implement tyres): flotation traction service




G-3


Garden tractor tyres (implement tyres): maximum flotation service




 


 




I-1


Agricultural implement tyres: multi-rib tread




I-2


Agricultural implement tyres: moderate traction service




I-3


Agricultural implement tyres: traction tread




I-4


Agricultural implement tyres: plough tail wheel service




I-5


Agricultural implement tyres: steering service




I-6


Agricultural implement tyres: Smooth tread




 


 




LS-1


Logging and Forestry Service Tyres: regular tread




LS-2


Logging and Forestry service tyres: intermediate tread




LS-3


Logging and Forestry service tyres: deep tread




LS-4


Logging and Forestry Service Tyres: shallow tread




 


 




R-1


Agricultural tractor drive wheel tyres: regular tread




R-2


Agricultural tractor drive wheel tyres: cane and rice service (deep tread)




R-3


Agricultural tractor drive wheel tyres: flotation service (shallow tread)




R-4


Drive wheel tyres: industrial service (construction application)









ANNEX 11

Example of the pictogram to be marked on both tyre sidewalls of the tyres to explicit the maximum inflation pressure not to be exceeded for bead seating during tyre mounting







The pictogram must be placed on both sidewalls.
The value of inflation pressure (2,5 bar in the example) must be the same as specified in paragraph 4.1.14 of this Regulation.

Minimum heights of markings








(mm)




 


Tyres of rim diameter code < 20 (508 mm) or of nominal section width ≤ 235 mm


Tyres of rim diameter code ≥ 20 (508 mm) or of nominal section width > 235 mm




a


2 


4 




The pictogram must be placed on both sidewalls.
The value of inflation pressure (250 kPa in the example) must be the same as specified by the tyre manufacturer in paragraph 4.1.14 of this Regulation.