UN R30: Proposal for Supplement 27 to the 02 series of amendments
Reference Number: WP.29/2025/68
Proposal to:
Update reference to ISO 4000-1:2024 (published in March 2024)
Clarify the structure indication within the tyre size designation for run flat or self-supporting tyres suitable for speeds in excess of 240 km/h (inscription “ZRF”)
Clarify the nominal rim diameter.
Amend the definition of principal grooves by eliminating the circular reference between this definition and the position of tread wear indicators.
Introduce definition of tread depth (used in the requirements for special use and professional off-road tyres)
This proposal (WP.29/2025/68), as amended by para. 72, was adopted by the World Forum. Thirty-five Contracting Parties out of the 55 applying UN R30 were present for the vote by AC.1. Thirty-five voted in favor with zero against and zero abstaining.