Proposal to include material characteristics of the tire tread in the technical requirements since the definition of “snow tyre for use in severe snow conditions” refers both to tread compound and tread pattern.
34. The expert from France presented ECE/TRANS/WP.29/GRRF/2015/3, amended by GRRF-78-10 and GRRF-79-28, introducing provisions for the type approval of retreaded snow tyres for use in severe snow conditions. The expert from Hungary introduced GRRF 79 27, providing some comments. GRRF adopted the proposal as amended (GRRF-79-28 and GRRF-79-34) by Annex III and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2015 sessions as draft Supplement 7 to Regulation No. 109.