Proposal to:

1. Correct the description of a tyre to exclude aspects outside the scope of UN R108
2. Align the snow tyre definition to UN R109 and 172
3. Clarify the definition of nominal rim diameter
4. Clarify the definition of principal grooves by eliminating the circular reference between this definition and the position of tread wear indicators
5. Introduce a definition for tread depth (used in the requirements for special use and professional off-road tyres)
6. Amend para. 4.1.5.3.2. to remove the retreaded reference to traction tyre classification because it is not applicable to tyre of class C1
7. Clarify the calculation of the tyre section width
8. Replace “XXX” with the UN Regulation No. 172 in the references to the approval of retreaded tyres with regard to their snow performance and/or classification as traction tyre.

Proposal to correct an omission and clarify the text of Annex 3: The positioning and order of the markings shall be as follows:….

Proposal to move provisions for snow grip performance of retreaded tyres and their classification as traction tyres from UN R108 into a new UN Regulation on type approval of retreaded tyres of classes C1, C2 and C3 with respect to their snow grip performance and/or classification as traction tyre.

Consolidated version including the amendments proposed with document ECE/TRANS/WP.29/GRBP/2024/11 amended by GRBP-79-28-Rev.1.

Proposal to replace document ECE/TRANS/WP.29/GRBP/2024/13

Consolidated version including the amendments proposed with document ECE/TRANS/WP.29/GRBP/2024/13 amended by GRBP-79-24.

This consolidated document amends and supersedes GRBP/2024/11.