GRBP/2026/12
UN R109: Proposal for a Supplement 2 to the 01 series of amendments

Proposal to delete the term “Supplier of the tread used for retreading process”, to delete “material manufacturer” in favor of “material supplier”, to simplify the list of tyres classified as a tyre for use in severe snow conditions and/or as traction tyre, to introduce a paragraph clarifying that the supplier of tread material dedicated to the retreading of tyres categorized as special use tyres shall provide to the retreader the “void to fill ratio” pertinent to such tread material, to correct a reference to “Appendix 2” to refer to “Schedule 1” of the 1958 Agreement, to delete the field for “Extension No.” in the Communication form since the extension is already in the Approval number, and to align wording with UN R54.

UNECE server
Excerpts from session reports
GRBP | Session 83 | 10-13 Feb

19. The representative of ETRTO introduced ECE/TRANS/WP.29/GRBP/2026/12, as amended by GRBP-83-21-Rev.2, as shortened version, and GRBP-83-22-Rev.2, as expanded version.
20. Following clarifications included in GRBP-83-22-Rev.2, GRBP adopted GRBP-83-22-Rev.2, entrusted the secretariat to make it as short as possible, and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at the June 2026 sessions as draft Supplement 2 to the 01 series of amendments to UN Regulation No. 109.