GAR | WP.29/2025/68

WP.29/2025/68

UN R30: Proposal for Supplement 27 to the 02 series of amendments

Source(s)

Date

9 Apr 2025

Status

Adopted

Subject

UN R30 Pneumatic Tires

Impact

02 series of amendments | Supplement 27

Meeting(s)

WP.29 | Session 196 | 23-27 Jun 2025

Agenda item 4.8.3. UN R30: Proposal for Supplement 27 to the 02 series of amendments

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)
Clarify the calculation of tyre section width
Claify the D_max requirement for snow tyres.

Downloads

UNECE server

Related documents

Excerpts from session reports

GRBP | Session 81 | 18-21 Feb 2025

12. The expert from ETRTO presented background information on a set of proposals clarifying definitions and making editorial changes in several UN Regulations on tyres (GRBP-81-13-Rev.1). For UN Regulation No. 30, ETRTO tabled draft amendments in ECE/TRANS/WP.29/GRBP/2025/9. GRBP adopted this proposal, as amended by GRBP-81-05-Rev.1 and subject to correcting the new paragraph number to 2.25.3.4.1. and requested the secretariat to submit it for consideration and vote at the June 2025 sessions of WP.29 and AC.1 as draft Supplement 27 to the 02 series of amendments to UN Regulation No. 30.

WP.29 | Session 196 | 23-27 Jun 2025

With 35 of the 55 Contracting Parties applying UN R30 present and voting, AC.1 adopted document WP.29/2025/68, as amended by para. 72 per the session report, by a vote of 35 in favor, 0 opposed, with 0 abstaining.