UN R124: Proposal for amendments
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Proposal to require wheel attachments with three or more fixing components (nuts or studs) in the scope of the Regulation, to restrict the difference in pitch circle diameter (PCD) of a wheel type comprised of more than two versions, to carry out additional rotating bending tests on each version with a PCD difference to a tested version of more than 6.5 mm, and to establish specifications for comparison of replica wheels with the minimum level of the vehicle manufacturer´s replacement wheels.

Reference Number: GRBP-72-04
Origin: Germany
Date: 2 September 2020
Proposal Status: Informal GR review
Related Documents:
GRBP/2021/7 | UN R124: Proposal for amendments
Working Party on Noise and Tyres | Session 72 | 7-9 Sep 2020

21. The expert from Germany proposed amendments with a view to adapting UN Regulation No. 124 to the current requirements for type approvals (GRBP-72-04). GRBP invited him to submit an official document for consideration at the next session.