20 Jun 2025 UN R117: Proposal for a Supplement 4 to the 04 series of amendments (Japan) GRBP/2025/26 2025-06-20 Proposal to clarify tyre abrasion provisions, including to add an ice temperature range of -5°C to -2°C to the test conditions for ice grip tyres. Japan
6 Feb 2025 Wet Grip on Worn Tyres: Comments on the proposed revisions to the terms of reference (Japan) WT-66-02 2025-02-06 Japan