| GRBP-70-22 | Snow tyres provisions: status report | |
| GRBP-70-23 | Status report of the Worn Tyres informal group | |
| GRBP-70-23 | Status report of the Worn Tyres informal group | |
| GRBP-70-23 | Status report of the Worn Tyres informal group | |
| GRBP/2019/14 | UN R117: Proposal for a Supplement to the 02 series of amendments |
GRBP is invited to consider a proposal submitted by the group of interested experts on snow tyre provisions.
| GRB-68-12 | UN R117: Comments on the Supplement proposal GRVA/2018/5 | |
| GRB/2018/5 | Annotated provisional agenda for the 68th GRB session | |
| GRB/2018/5/Add.1 | GRB-68: Addendum to the annotated provisional agenda | |
| GRBP-70-23 | Status report of the Worn Tyres informal group | |
| GRBP/2019/19 | UN R117: Proposal for an amendment |
GRBP will recall that, at its previous session, the expert from ETRTO requested a postponement of consideration of ECE/TRANS/WP.29/GRVA/2018/5 and GRB-68-12. GRBP is invited to resume the discussion and to address a complementary proposal by the experts of ETRTO (ECE/TRANS/WP.29/GRBP/2019/19).
| GRBP-70-03 | Revised Terms of Reference of the Working Group on Worn Tyres (WGWT) | |
| GRBP-70-23 | Status report of the Worn Tyres informal group |
GRBP will be briefed on the activities of the IWG on Wet Grip Performance of Tyres in a Worn State (IWG WGWT).
| GRBP-70-20 | Wet grip test method improvement for C1 tyres | |
| GRBP-70-23 | Status report of the Worn Tyres informal group |
[ETRTO presentation on ISO and tyre industry work to improve wet-grip test methods for passenger car (C1) tyres.]
| GRBP-70-25 | Tyre performance study: noise vs. other performance | |
| GRBP-70-21/Rev.2 | UN R117: Modification to document GRBP/2019/19 |