Proposal for Supplement 8 to Regulation No. 109
Document WP.29/2017/9
23 December 2016

Proposal to amend Annex 7 and Annex 10. This proposal would:

  1. change measurement units for drum speed in Annex 7 from min-1 to km.h-1 to align the requirements with other tyre regulations;
  2. correct the wording from “speed category symbol” to “speed symbol” (as defined in para. 2.33);
  3. correct the wording from “load capacity index” to “load index” (as defined in para. 2.32);
  4. correct a reference to para. 3.2.13. of the Regulation in Annex 7, Appendix 1;
  5. correct a boundary value of load index in Annex 7, Appendix 1;
  6. delete in paragraph 2.1 in Annex 7, the possibility to use the 2.0 m drum diameter to perform the endurance test.

In Annex 10, the proposal aligns the text with Annex 7 of UN R117, 02 series of amendments, Supplement 5.

The proposal would also clarify provisions for the minimum heights for markings for tyres with nominal rim diameter codes ≥ 20 and nominal section width ≤ 235 and for tyres with nominal rim diameter codes < 20 and nominal section width > 235. The proposal also corrects tables and figures for the use of lowercase letter to denote tyre dimension specifications.

Status: Adopted
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Previous Documents, Discussions, and Outcomes
4.7.2. | Proposal for Supplement 8 to Regulation No. 109
7. (f) | Tyres: Regulation No. 109

39. GRRF resumed consideration of proposed amendments to Annexes 7 and 10 to Regulation No. 109 as well as the proposal originally submitted by the expert from Slovakia, in ECE/TRANS/WP.29/GRRF/2016/40. The expert from ETRTO presented a proposal for amendments to tyre marking requirements in ECE/TRANS/WP.29/GRRF/2016/41.

40. GRRF adopted both proposals and requested the secretariat to submit them as draft Supplement 8 to Regulation No. 109 (Retreaded tyres for commercial vehicles and their trailers) to WP.29 and AC.1 for consideration and vote at their March 2017 sessions.

Related and Previous Documents
GRRF/2016/40
GRRF/2016/41
Relates to UN R109 |