Proposal to address the definition of the radial structure, 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.
13. Based on a study (GRBP-76-04), the expert from ETRTO proposed a new definition for “radial tyre” (ECE/TRANS/WP.29/GRBP/2022/21). The proposal also addressed other issues, such as the definition of snow tyres, requirements for special use tyres of class C1, addition of an optional prefix for extra load tyres, a clarification on the description of the load/speed test for run flat/extended mobility tyres and editorial corrections.
14. GRBP adopted ECE/TRANS/WP.29/GRBP/2022/21 and requested the secretariat to submit it for consideration and vote at the March 2023 sessions of WP.29 and AC.1 as draft Supplement 25 to the 02 series of amendments to UN Regulation No. 30.
15. The experts from France and EC introduced an updated proposal for the new definition of “radial tyre” (ECE/TRANS/WP.29/GRBP/2021/9). The same definition was also proposed for UN Regulations Nos. 54, 75, 106, 108 and 109 ECE/TRANS/WP.29/GRBP/2021/10. The experts from Canada and the United States of America raised a number of questions on the proposal (GRBP-74-07) and pointed out that they had started consultations with the authors. GRBP invited the stakeholders, in liaison with ETRTO, to continue discussions and agreed to come back to the proposal at the next session.
| GRBP/2022/21 | |
| GRBP/2021/9 |