GRBP will address amendment proposals on the test conditions for ice grip tyres that were submitted by the expert from Japan.
| GRBP/2025/26 | UN R117: Proposal for Supplement 4 to the 04 series of amendments |
| GRBP-82-26 | UN R117: Proposal for a Supplement 4 to the 04 Series of amendments | |
| GRBP-82-27 | UN R117: Proposal for Supplement 4 to the 04 Series of amendments | |
| GRBP-82-28 | UN R117: GOIE on Tyre Noise Level Alignment (TNLA); Status Report | |
| GRBP-82-31 | IWG for Wet Grip on Worn Tyres (WGWT): Status Report | |
| GRBP-82-32 | IWG on Wet Grip Performance for Tyres in a Worn State (WGWT): Revised Terms of Reference |
GRBP will be briefed on the activities of the Informal Working Group on Wet Grip Performance of Tyres in Worn State (IWG WGWT).
| GRBP-82-26 | UN R117: Proposal for a Supplement 4 to the 04 Series of amendments | |
| GRBP-82-27 | UN R117: Proposal for Supplement 4 to the 04 Series of amendments | |
| GRBP-82-28 | UN R117: GOIE on Tyre Noise Level Alignment (TNLA); Status Report | |
| GRBP-82-31 | IWG for Wet Grip on Worn Tyres (WGWT): Status Report | |
| GRBP-82-32 | IWG on Wet Grip Performance for Tyres in a Worn State (WGWT): Revised Terms of Reference |