Proposal to include wet grip adhesion provisions for C2 and C3 tyre categories.

Text prepared by the European Commission (EC), France and European Tyre and Rim Technical Organisation (ETRTO) in order to introduce wet grip provisions and testing procedures for tyres of categories C2 and C3.

Editorial corrections to the proposal prepared by the European Commission (EC), France and European Tyre and Rim Technical Organisation (ETRTO) to introduce wet grip provisions and testing procedures for tyres of categories C2 and C3.

Report of the special meeting held in Paris on 21 November 2013 to discuss wet grip values for Class C2 and C3 tyres.

European Commission proposal for minimum wet grip limits on Class C3 tyres. The EC notes that the wet grip (G) index is intended as a precautionary measure that would set a minimum level already satisfied by products currently on the market. In anticipation of improvements in new tires, the EC proposes to add a notation “Wet grip index (G) ≥ 0.80 may be considered for new types of tyres 96 months after the entry into force date of Supplement 5 to the 02 series of amendments, based on robust field data and cost-effectiveness analysis.”

Statistical data on road transport from the EU.

EC recommendations based on the Study on some safety-related aspects of tyre use.

Proposal to expand the scope of the activity to include C2 and C3 tyres.

Proposal to revise the limits for rolling resistance and wet grip, address tyres for vintage vehicles, and revise the definition for special-use C1 tyres.

The existing transitional provisions do not address tyres produced in accordance with the applicable requirements and placed in distribution channels before 7 July 2026. Therefore, a new transitional provision is proposed based on the clause R.4 of part C – “Transitional provisions for replacement parts for vehicles in use” of the General Guidelines for United Nations Regulatory Procedures and Transitional Provisions in UN Regulations. It will clarify that new tyres manufactured before 7 July 2026 and approved according to the 02 or 03 series of amendment will be allowed to be sold and fitted on vehicles in use for additional period not exceeding 30 months from 7 July 2026.