Proposal for amendments that allows for tyre marking methods other than moulding.

Proposal to amend the extended mobility tyre (EMT) symbol following the detection of dimensional inconsistencies within the International Organization for Standardization Working Group (ISO) TC31/SC3/WG19, where the dimension “0,33h” was judged wrong and constituting an unnecessary over constraint and to amend the inflation value to be used for the tyre conditioning when assessing the “flat tyre running mode” of “run flat tyres” and of “extended mobility tyres”.

Proposal to expand and improve the current definition of a radial structure while ensuring the radial tyres key features (mechanical decoupling between the tread and the bead).

Proposal to align definitions across tyre regulations and align the regulations with technological progress, correct an editorial error, and clarify that the ply rating is not applicable to T-type temporary use tyres.

Changes to the proposal to align definitions across tyre regulations and align the regulations with technological progress, correct an editorial error, and clarify that the ply rating is not applicable to T-type temporary use tyres.

ETRTO report on the study on the Dimensional Requirements for tyres with radial or run flat structure after having performed the load speed endurance test. ETRTO proposes to amend the UN Regulations No 30, 54 [and 75] by removing the requirements for tyres with radial and run flat structure.

ETRTO proposal for amending tyre marking method by the removal of the use of wording “moulded” in the marking clause as this is only one of the various technical solutions currently available.