WP.29/2025/74
UN R109: Proposal for Supplement 1 to the 01 series of amendments
Source(s)
Date
10 Apr 2025
Status
Adopted
Subject
Impact
01 series of amendments | Supplement 1
Meeting(s)

Proposal to:


  1. Correct the description of a tyre to exclude aspects outside the scope of UN R109

  2. Clarify the definition of nominal rim diameter

  3. Clarify the definition of principal grooves in line with the proposal for UN R54

  4. Amend para. 6.4.4.2. to clarify that the UN R117 certificate may be used for obtaining the type approval under UN R172 of retreaded tyres classified as traction tyre

  5. Simplify the wording of the requirements for professional off-road tyres

  6. Replace “XXX” with the UN Regulation No. 172 in the references to the approval of retreaded tyres with regard to their snow performance and/or classification as traction tyre.
Downloads
UNECE server
Related documents
GRBP/2025/16
UN R109: Proposal for a Supplement to the 01 series of amendments (Superseded)
GRBP-81-12/Rev.1
UN R109: Proposal to supersede document GRBP/2025/16 (Superseded)
Excerpts from session reports
GRBP | Session 81 | 18-21 Feb 2025

15. The expert from ETRTO submitted editorial corrections and clarifications to the new 01 series of amendments to UN Regulations Nos. 108 and 109 (ECE/TRANS/WP.29/GRBP/2025/15 and ECE/TRANS/WP.29/GRBP/2025/16). GRBP adopted these proposals, as amended GRBP-81-11-Rev.1 and GRBP-81-12-Rev.1., and requested the secretariat to submit them for consideration and vote at the June 2025 sessions of WP.29 and AC.1 as respectively draft Supplement 1 to the 01 series of amendments to UN Regulation No. 108 and draft Supplement 1 to the 01 series of amendments to UN Regulation No. 109. For draft Supplement 1 to the 01 series of amendments to UN Regulation No. 108, GRBP recalled that the pending correction in ECE/TRANS/WP.29/GRBP/2024/24 should be added.

15. The expert from ETRTO submitted editorial corrections and clarifications to the new 01 series of amendments to UN Regulations Nos. 108 and 109 (ECE/TRANS/WP.29/GRBP/2025/15 and ECE/TRANS/WP.29/GRBP/2025/16). GRBP adopted these proposals, as amended GRBP-81-11-Rev.1 and GRBP-81-12-Rev.1., and requested the secretariat to submit them for consideration and vote at the June 2025 sessions of WP.29 and AC.1 as respectively draft Supplement 1 to the 01 series of amendments to UN Regulation No. 108 and draft Supplement 1 to the 01 series of amendments to UN Regulation No. 109. For draft Supplement 1 to the 01 series of amendments to UN Regulation No. 108, GRBP recalled that the pending correction in ECE/TRANS/WP.29/GRBP/2024/24 should be added.

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