| GRB-66-01 | Tyres in Europe: Tightening of tyre limits and further suggestions for improvement | |
| GRB-66-01/Add.1 | Tyres in Europe presentation | |
| GRB-66-03 | Proposal for amendments to the 02 series of amendments to Regulation No. 117 | |
| GRB-66-22 | Tyre sound limit trade-offs |