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UN R124: Proposal for Supplement 4
Document WP.29/2025/5
20 December 2024
195th WP.29 session (3-7 Mar 2025)

Proposal to clarify the text:

  • Clarify Annex 4 and exclude aluminum-alloy and magnesium-alloy wheels under test (b)
  • Clarify Annex 6 to exclude deformation of the wheel
    assembly and fractures in the area of a rim section struck by the face plate of the
    striker from failure criteria
  • require under Annex 6 to identify cracks occurred as a result of the test by using a suitable technical test
  • Clarify Annex 8 with regard to air leakage.

Status: Formal WP.29 review
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Previous Documents, Discussions, and Outcomes
195th WP.29 session (3-7 Mar 2025)
4.6.3. | Proposal for Supplement 4 to the 00 series of amendments to UN Regulation No. 124 (Replacement Wheels for Passenger Cars)
80th GRBP session (17-20 Sep)
6. (d) | UN Regulation No. 124 (Replacement Wheels for Passenger Cars)

30. The expert from the Russian Federation introduced a revised proposal that clarified certain provisions (ECE/TRANS/WP.29/GRBP/2024/19). GRBP adopted the proposal and requested the secretariat to submit it for consideration and vote at the March 2025 sessions of WP.29 and AC.1 as draft Supplement 4 to the 00 series of amendments to UN Regulation No. 124. During the adoption, the expert from the Netherlands reserved his position.

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GRBP/2024/19
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