This session includes documents concerning UN R117 Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance.
| WT-30-01 Agenda for the 30th Worn Tyres informal group session | |
| Download in .doc format | |
| WT-30-06 Proposal for additional Worn Tyres group test campaign | |
| Download in .pdf format | |
| WT-30-08 Agenda for 3 December 2021 Worn Tyres informal group follow-up discussion | |
| Download in .doc format | |
| WT-30-03 Attendance list from the 30th Worn Tyres informal group session | |
| Download in .doc format | |
| WT-30-05 Minutes of the 30th Worn Tyres informal group session | |
| Download in .doc format | |
| WT-30-09 Attendance list from the follow-up to the 30th Worn Tyres informal group session | |
| Download in .doc format | |
| WT-30-10 Minutes from the follow-up to the 30th Worn Tyres informal group session | |
| Download in .doc format | |