Non-Governmental Organization
European Tyre and Rim Technical Organisation
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Date Reference Description Status
11 Jan 2022 WT-32-04
EU Tyre Industry proposal for Wet grip on Worn tyres (C1)
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
11 Jan 2022 WT-32-05
Worn Tyres: Timeline proposal for additional test campaign
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
19 Jan 2022 WT-33-03
Worn tyres: Proposal for additional test campaign timeline
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
19 Jan 2022 WT-33-02
Worn tyres: Proposal for C1 wet-grip threshold
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
26 Jan 2022 WT-34-04
Threshold proposal for C1 wet grip of worn tyres (Revision 2)
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
26 Jan 2022 WT-34-05
Proposal for worn tyre track friction range
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
02 Feb 2022 WT-35-03
Concept proposal for C2 and C3 worn tyres wet grip
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
02 Feb 2022 WT-35-04
Input on C1 tyre track friction range
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
02 Feb 2022 GRBP-75-22
UN R30: Comments on proposal to amend the definition of radial structure
Working Party Informal Pneumatic Tires Pneumatic Tires Uniform Provisions Concerning the Approval of Pneumatic Tyres for Motor Vehicles and their Trailers
10 Feb 2022 GRBP-75-31/Rev.2
UN R54: Proposal for Supplement 25 to the 00 series of amendments
Working Party Informal Commercial Vehicle Tyres CV Tires Uniform Provisions Concerning the Approval of Pneumatic Tyres for Commercial Vehicles and their Trailers Proposal to avoid placing requirements in the Definitions section and to facilitate the text by making use of the definition of "service description" that was introduced by Supplement 24.
30 Sep 2020 FRAV-25-09
Study on the effects of automation on road user behaviour and performance: Executive summary
Informal Group Informal Automated Driving Systems Automated Driving
04 Mar 2022 WP.29-186-07
UN R109: Proposal to amend document WP.29/2022/7
World Forum Informal Retreaded Tires for Commercial Vehicles CV Retreaded Tires Uniform Provisions Concerning the Approval for the Production of Retreaded Pneumatic Tyres for Commercial Vehicles and their Trailers ETRTO detected an issue in document ECE/TRANS/WP.29/2022/7 with the insertion of paragraph 3.5.1. that is the consequence of the alignment between UN Regulation No. 54 and UN Regulation No. 109. This new requirement regarding the marking position in the sidewall for retreaded tyres is creating a burden for the retread industry that will potentially need to adapt all their moulds accordingly, without considering transitional provisions.
01 Mar 2022 DETA-43-06
DETA: Proposal for document partitioning
Informal Group Agenda Database for the Exchange of Type Approval Documentation DETA n.a.
01 Mar 2022 DETA-43-07
DETA: Proposal for file naming
Informal Group Informal Database for the Exchange of Type Approval Documentation DETA n.a.
05 Apr 2022 WT-37-02
Worn WGI C1 tyre cluster definition proposals for UHP, Legal Race and All Terrain
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
05 Apr 2022 WT-37-03
Worn tyres: C2 and C3 regulatory text proposal
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
28 Apr 2022 TA-01-03
Tyre Abrasion Rate test development
Informal Group Informal Tyre abrasion test method development Tyre wear
13 May 2022 WT-39-02
Worn tyres cluster definition and threshold
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
13 May 2022 WT-39-03
Threshold proposal for C2 and C3 tyres wet grip in worn state
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
03 Jun 2022 WT-41-02
UN R117: Proposal to add tread depth measurement prescriptions in Annex 9
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
09 Jun 2022 WT-41-05/Rev.1
Worn tyres: C1 cluster definition and threshold proposals for “UHP” and “All Terrain”
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
26 Jul 2022 WT-44-03
Worn tyres: Comments on proposal for 2023 additional test campaign work plan
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
17 Jun 2022 TA-03-02
Tyre abrasion test results
Informal Group Informal Tyre abrasion test method development Tyre wear
17 Jun 2022 TA-03-03
Tyres and abrasion Tyre Abrasion Rate test development
Informal Group Informal Tyre abrasion test method development Tyre wear
09 Aug 2022 TA-04-02
Tyre Abrasion Rate Measurement: Vehicle method description
Informal Group Informal Tyre abrasion test method development Tyre wear
16 Jun 2022 GRBP/2022/21
UN R30: Proposal for a Supplement to the 02 series of amendments
Working Party Working Pneumatic Tires Pneumatic Tires Uniform Provisions Concerning the Approval of Pneumatic Tyres for Motor Vehicles and their Trailers Proposal to address the definition of the radial structure (as a continuation to ECE/TRANS/WP.29/GRBP/2021/9), the definition of snow tyres, the requirements for special use tyres of class C1, the addition of an optional prefix for extra load tyres, a clarification of the description of the load/speed test for run flat tyres and extended mobility tyres (EMT) and editorial corrections.
16 Jun 2022 GRBP/2022/17
UN R117: Proposal for the 04 series of amendments
Working Party Working Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Proposal to introduce a new definition of traction elements to characterize traction tyres.
16 Jun 2022 GRBP/2022/20
UN R117: Proposal for a Supplement to the 02 series of amendments
Working Party Working Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Proposal to correct editorial mistakes in document GRBP/2021/17 that were not corrected by informal document GRBP74-31-Rev.1.
16 Jun 2022 GRBP/2022/18
UN R117: Proposal for a Supplement to the 03 series of amendments
Working Party Working Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Proposal to introduce provisions to allow type approval of special use tyres that fulfil the requirements for snow performance as laid out in Annex 7. The respective marking related to the “Alpine” symbol has been considered for tyres complying with these requirements.
16 Jun 2022 GRBP/2022/19
UN R117: Proposal for a Supplement to the 02 series of amendments
Working Party Working Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Proposal to introduce provisions to allow the type approval of special use tyres that fulfil the requirements for snow performance as laid out in Annex 7. The respective marking related to the “Alpine” symbol has been considered for those tyres complying with these requirements.
29 Aug 2022 TA-04-03
Tyre abrasion: Validation and correlation of test methods
Informal Group Informal Tyre abrasion test method development Tyre wear
15 Aug 2022 GRBP-76-04
UN R30: Study on the proposal for a new radial tyre definition
Working Party Informal Pneumatic Tires Pneumatic Tires Uniform Provisions Concerning the Approval of Pneumatic Tyres for Motor Vehicles and their Trailers
31 Aug 2022 GRBP-76-21
UN R117: Proposal to amend the proposal for Supplement 2 to the 03 Series of amendments
Working Party Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Proposals for editorial corrections to the provisions for type approval of special use tyres that fulfil the requirements for snow performance
31 Aug 2022 GRBP-76-22
UN R117: Proposal to amend the Supplement to the 02 series of amendments
Working Party Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Proposal for editorial corrections
31 Aug 2022 GRBP-76-23
UN R117: Proposal for amendments to the proposal for 04 series of amendments
Working Party Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Proposal introduces provisions to allow the type approval of special use tyres that fulfil the requirements for snow performance as laid out in Annex 7. The respective marking related to the “Alpine” symbol has been considered for those tyres complying with these requirements.
03 Sep 2022 GRBP-76-24/Rev.1
UN R117: Proposal for amendment to proposal for the 04 series of amendments
Working Party Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Proposal introduces provisions to allow the type approval of special use tyres that fulfil the requirements for snow performance as laid out in Annex 7. The respective marking related to the “Alpine” symbol has been considered for those tyres complying with these requirements
03 Sep 2022 GRBP-76-31
UN R117: Proposal to amend the proposal for 04 series of amendments
Working Party Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Re-introduces the definition of traction tyre as this can be still used between the entry into force date of the 04 series of amendments and 7 July 2024 .
03 Sep 2022 GRBP-76-32
UN R117: Proposal to amend the proposal for the 04 series of amendments
Working Party Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Editorial corrections and amends the transitional provisions
06 Sep 2022 GRBP-76-33/Rev 1
UN R117: Proposal to amend proposal for 04 series of amendments
Working Party Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Proposes the amendment to the transitional provisions aligning with other proposals
03 Sep 2022 GRBP-76-34
UN R117: Proposal for amendment to proposal for 03 series of amendments
Working Party Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Proposal to update the reference to the latest ISO 10844 standard
03 Sep 2022 GRBP-76-35
UN R117: Proposal to amend the proposal for Supplement 14 to the 02 series of amendments
Working Party Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Updates the reference to latest version of ISO 10844:2021
05 Sep 2022 GRBP-76-38
UN R117: Overview of current amendment proposals
Working Party Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
12 Sep 2022 WT-45-02
ETRTO workplan proposal for Wet Grip on Worn tyre test precision improvement
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
14 Sep 2022 TFVS-11-06
Tyre noise: Cost-Benefit Analysis by EMISIA
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Vehicle Sound Vehicle Sound
04 Nov 2022 WT-47-02
Worn tyres work plan proposal
Informal Group Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
08 Nov 2022 TFMU-21-07
Proposal for R117 C1 noise temperature correction update
Informal Subgroup Informal Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
12 Nov 2022 TA-06-05
Rationale for ETRTO Abrasion Rate test layout
Informal Group Informal Tyre abrasion test method development Tyre wear
14 Nov 2022 TA-06-03/Rev.1
Tyre abrasion: Proposal for workplan 2023
Informal Group Informal Tyre abrasion test method development Tyre wear
25 Nov 2022 GRBP/2023/11
UN R54: Proposal for amendments
Working Party Working Commercial Vehicle Tyres CV Tires Uniform Provisions Concerning the Approval of Pneumatic Tyres for Commercial Vehicles and their Trailers Proposal to address the following: 1. “Special use” tyres with nominal rim diameters larger than those listed in the present table (rim diameters up to 42, section widths up to 750 mm and overall diameters over 2 meters) and with speed symbols F and above have been announced in the European market as original equipment of N3G "special purpose vehicles" (i.e., special high speed self-propelled vehicles for agricultural and forestry use, like wood choppers). 2. Existing multi-purpose tyres (MPT) (classified as “special use tyres” as per paragraphs 2.5.3. and 3.1.13.), already type approved since years, have a tread pattern with lugs or cleats in addition to those with blocks, as evidenced by the attached slide showing some examples. It is proposed to amend paragraph 6.3.1. by clarifying that lugs and cleats are possible shapes of the mentioned blocks. 3. Testing tyres with very large overall diameters, sometimes over 2 m, on a test drum with a diameter of 1.70 m ± 1 % would be unpracticable. For practical reasons most of those tyres are regularly tested on drums with a diameter of 3 m or even larger. The proposal carries equivalence provisions from UN R106 to justify the equivalence of the test method as required by Annex 7 in point 4 “Equivalent test methods" and clarifies based on UN R117 the formula already used indirectly. 4. Some commercial vehicles are often used in the market at a reduced speed of 70 km/h with a load-capacity of the tyres increased as per load/speed combination defined in the table of Annex 8. The proposal would allow use of the speed category symbol E (but restrict it to "additional service description") to provide this information. 5. Considering that 32 km/h is already a floor value for the test-drum speed for diagonal tyres, ETRTO proposes not to apply to E speed category symbol tyres the linear decrease of the test-drum speed in function of the decrease of the speed category symbol by keeping, for safety reasons, the same test-drum speed as for F speed category symbol tyres, i.e., 32 km/h). 6. In the case of additional service descriptions mentioned in paragraph 6.2.5.1., it is proposed not to perform the additional load/speed test because the load-capacity approximates with a negligeable difference the reduction or the increase in percentage of the nominal load/speed combination applicable to the nominal speed category symbol (see Annex 8). 7. Type approval applications for radial tyres with load capacity index greater or equal to 122 and without the additional marking "LT", or "C" have been done in the past for the speed category symbol N for which the load/speed endurance test procedure is not described in Annex 7, Appendix 1. To type approve such tyres the test speed was separately defined by the different involved Type Approval Authorities. In order to harmonize the test procedure to be used for the type approval of such tyres, it is proposed to amend the Annex 7, Appendix 1 by introducing testing conditions in line with the rule applied for defining the test speed of radial tyres with load capacity index greater or equal to 122 (i.e. starting from 32 km/h set for F speed category symbol, the test speed is increased by 8 km/h respect to the one set for the previous speed category symbol). 8. The definition of "snow tyre" is amended to clarify that "snow tyres" are not only suitable for the use in snow conditions but also on mud and by replacing the term "maintain vehicle motion" (i.e. keeping the vehicle speed and direction of movement constant) by a more general concept of "controlling vehicle motion" (i.e. also being able to change the vehicle speed and direction of movement as intended). 9. It is proposed to explicitly allow other technical measurement solutions of the tyre overall width by removing the words “by caliper” which fix a technical limitation. The removal of this technical limitation would be advisable following the principle of not stopping the technical innovations. 10. Editorial corrections are introduced to ensure that the terms "load-capacity" and "speed category symbol" are used consistently throughout the text and to remove some typing mistakes present in the current text.
25 Nov 2022 GRBP/2023/7
UN R75: Proposal for amendments
Working Party Working Motorcycle and Moped Tires Motorcycle Tires Uniform Provisions Concerning the Approval of Pneumatic Tyres for Motor Cycles and Mopeds Proposal to explicitly allow other technical measurement solutions of the tyre overall width by removing the words “by calliper”, add the definition of "special tyre", clarify the definition of "snow tyre", to enable the case of a "special tyre" fulfilling the definition of a "snow" tyre, clarify application of the suffix "M/C", and make editorial corrections and clarifications.
25 Nov 2022 GRBP/2023/8
UN R117: Proposal for amendments
Working Party Working Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance Tire Noise, Wet Adhesion, and Rolling Resistance Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Proposal to delete obsolete footnotes concerning worn tyre wet grip and approvals under UN R117 coincident with approvals under UN R54. The 04 series of amendments to UN R117 introduces the requirements on adhesion of tyres in worn state on wet surfaces for tyres within the scope of UN R54.
25 Nov 2022 GRBP/2023/9
UN R106: Proposal for amendments
Working Party Working Tires for Agricultural Vehicles Agricultural Tires Uniform Provisions Concerning the Approval of Pneumatic Tyres for Agricultural Vehicles and their Trailers Proposal to extend the scope of the speed category E to align with the technical evolution of agricultural and forestry vehicles.
25 Nov 2022 GRBP/2023/10
UN R109: Proposal for amendments
Working Party Working Retreaded Tires for Commercial Vehicles CV Retreaded Tires Uniform Provisions Concerning the Approval for the Production of Retreaded Pneumatic Tyres for Commercial Vehicles and their Trailers The prescription given in paragraph 3.5.2., which will be implemented through document WP.29/2022/7/Rev.1 adopted by WP.29, contradicts the previously existing prescription in paragraph 3.2.9. This proposal aims to resolve the contradiction by amending paragraph 3.5.2. to introduce a reference to the prescriptions given in paragraph 3.2.9.
09 Dec 2022 TA-07-05
Difference between tire abrasion and tire mileage measurement
Informal Group Informal Tyre abrasion test method development Tyre wear
09 Dec 2022 TA-07-07
Tyre Abrasion: Vehicle Load Normalization
Informal Group Informal Tyre abrasion test method development Tyre wear
09 Dec 2022 TA-07-06
Tyre abrasion: Tyre selection for Correlation Test Plan
Informal Group Informal Tyre abrasion test method development Tyre wear
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