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 address the definition of the radial structure, the definition of snow tyres, the requirements for special use tyres of class C1, the addition of an optional prefix for extra load tyres, a clarification of the description of the load/speed test for run flat tyres and extended mobility tyres (EMT) and editorial corrections.

Proposal for editorial corrections.

Proposal to

• amend the tyre dimensional requirements,
• amend the requirements for the load/speed performance test,
• align definitions and content with the other tyre regulations (UN Regulations Nos. 117, 54, 75 etc.),
• include a definition of “manufacturer” extracted from the resolution R.E.3,
• adopt a common definition and use of the terms “Manufacturer’s name”, “Brand name”, “Trademark”, “Trade description” and “Commercial name” and their links, and
• add information in the certificate to enable approval authorities to more easily understand the products the certificate addresses.

Proposal to correct paragraph number references due to the recent renumbering of definitions.

Proposal for editorial improvements, including to update a cross-reference in paragraph 3.4. to read “3.1.2” pursuant to the earlier division of paragraph 3.1 into separate paragraphs 3.1.1. and 3.1.2.

Proposal to introduce a definition for “Extended Mobility Tyre” based on a new “minimum requirement” performance test procedure with the relevant pictogram to be used to properly distinguish such tyres and to ensure that that P-type tyres can be distinguished from non-P-type tyres.

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.

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

Proposal adopted by the GRRF to harmonize definitions and marking requirements of UN R30 with the new 02 series of amendments to Regulation No. 117 and clarifying the requirements for the load/speed performance test and to cover regulatory regulatory markings for “temporary uses spare tyres”.