| GRRF-83-32 | Progress report of the Tyre GTR informal group | |
| WP.29-170-12 | Terms of Reference and the Rules of Procedure of the Informal Working Group for the Phase 2 of development of UN GTR No. 16 | |
| TYREGTR-15-06 | China comments on the second phase harmonization of GTR No. 16 (Tires) | |
| GRRF-83-32 | Progress report of the Tyre GTR informal group |