31. GRRF reviewed ECE/TRANS/WP.29/2012/2 clarifying in Regulation No. 117 the current wet grip testing method and adding specific performance requirements for C3 snow tyres. GRRF agreed to go forward with the proposed agenda of the March 2012 session of WP.29, but to include some minor editorial corrections transmitted by the expert from ETRTO to the secretariat.

32. The expert from ETRTO recalled the purpose of GRRF-71-11 justifying the insertion of provisions for snow tyres of class C2 (ECE/TRANS/WP.29/GRRF/2011/29). GRRF adopted ECE/TRANS/WP.29/GRRF/2011/29 and agreed to submit it to WP.29 and AC.1, for consideration at their November 2012 sessions, as part (para. 25 above) of draft Supplement 2 to the 02 series of amendments to Regulation No. 117, subject to a final review by GRB and GRRF at their next sessions in September 2012.

33. The expert from France introduced ECE/TRANS/WP.29/GRRF/2012/5 proposing to amend the definition of the measuring rim for C1, C2 and C3 tyres. Following the discussion, the expert from France presented a revised proposal (GRRF-72-24) taking into account the comments received. GRRF adopted ECE/TRANS/WP.29/GRRF/2012/5 as reproduced in Annex VII and agreed to submit it to WP.29 and AC.1, for consideration at their November 2012 sessions, as a separate document for draft Supplement 2 to the 02 series of Amendments to Regulation No. 117, also subject to a final review by GRB and GRRF at their next sessions in September 2012.

34. The expert from ETRTO proposed to clarify the title of Regulation No. 117 and its Annex 1 (ECE/TRANS/WP.29/GRRF/2012/10). GRRF adopted the proposal and it was agreed to have a final review by GRB and GRRF at their next sessions in September 2012. The secretariat was requested to submit it to WP.29 and AC.1, for consideration at their November 2012 sessions, as part (paras. 25 and 32 above) of draft Supplement 2 to the 02 series of amendments to Regulation No. 117.