GRBP will be briefed on the activities of the IWG on Wet Grip Performance of Tyres in a Worn State (IWG WGWT).
| GRBP-74-04 | UN R117: Proposal for amendments to the 02 series of amendments | |
| GRBP-74-33/Rev.1 | UN R117: Proposal for amendments | |
| GRBP-74-33/Rev.1 | UN R117: Proposal for amendments | |
| GRBP-74-33/Rev.1 | UN R117: Proposal for amendments | |
| GRBP-75-25/Rev.1 | UN R117: Proposal for amendments | |
| GRBP-75-25/Rev.1 | UN R117: Proposal for amendments | |
| GRBP-75-25/Rev.1 | UN R117: Proposal for amendments | |
| GRBP-75-26/Rev.1 | UN R117: Presentation on the concept for addressing wet grip on worn tyre requirements for C2 and C3 tyres | |
| GRBP-75-29 | UN R117: Proposal for amendments to the 03 series of amendments | |
| GRBP-75-30 | UN R117: Presentation on evolution of tyre limits rolling resistance in new condition wet grip in new & worn condition |
GRBP will recall that, at the previous session, it adopted draft amendments on the procedure and thresholds on wet grip performance for C1 tyres in worn state and noted that, with the aim to complete the proposal and remove few square brackets, an informal document would be prepared for this session.
| GRBP-74-04 | UN R117: Proposal for amendments to the 02 series of amendments | |
| GRBP-74-33/Rev.1 | UN R117: Proposal for amendments | |
| GRBP-74-33/Rev.1 | UN R117: Proposal for amendments | |
| GRBP-75-25/Rev.1 | UN R117: Proposal for amendments | |
| GRBP-75-25/Rev.1 | UN R117: Proposal for amendments | |
| GRBP-75-26/Rev.1 | UN R117: Presentation on the concept for addressing wet grip on worn tyre requirements for C2 and C3 tyres | |
| GRBP-75-29 | UN R117: Proposal for amendments to the 03 series of amendments | |
| GRBP-75-30 | UN R117: Presentation on evolution of tyre limits rolling resistance in new condition wet grip in new & worn condition |