Proposal to allow, under certain conditions of traceability, the upgrading of the service description of a used casing, to align the provisions for retreaded tyres with recent development of UN R54 and R117, and to cover all the tread materials.

Comments on the proposals prepared by BIPAVER, France and Netherland to align the test procedures for retreaded tyres with the latest amendments to R30, R54 and R117.

Summary of GRBP-74-06

Proposal to align the provisions for retreaded tyres with the proposals of the European Tyre and Rim Technical Organization (ETRTO) for UN Regulations Nos. 54 and 117 and to cover all the tread materials.

Proposal to allow, under certain condition of traceability, upgrading of the service description of a used casing.

Proposal to amend the definition of “radial tyre” in UN Regulations No. 54, 75, 106, 108 and 109 based on the proposal for UN Regulation No. 30 in document GRBP/2021/9.

Proposal to clarify:

1. Signature of the 3PMSF test reports
2. Mould cure retreaded tyre (not UN R117 pattern).