Marked up working draft of the amendment to the tyre GTR following the 17th informal group session.

Overview of the Standard Reference Test Tire validation process under the ATSM International standard F2493 (Specification for P225/60R16 97S Radial Standard Reference Test Tire).

Action item 4 : ETRTO will make a proposal on the relationship between the test pressure used in each GTR test and the test pressures stamped on the sidewall as per 3.3.5 and 2.56.

Action item 5 : It seems that the markings are mandatory in Tyre GTR. ETRTO will investigate if the markings in paragraph 3 are mandatory according to the GTR text and will assess the need for rewording of paragraphs 3.2 and 3.3.

Action item 6 : ETRTO will provide the justification to change in R54 (and in GTR) the definition of the measuring rim, considering the prerogatives of the IWG to change or not existing text from R54.

USTMA, JATMA, ETRTO comments on China review of GTR 16 identifying differences in requirements between the GTR and China’s tyre regulations.

Data collected from tyre manufacturers on their use of the various national/regional/international tyre markings to support discussions on development of a global tyre marking protocol.

Proposal for additional tyre specifications to

1. add values specified in FMVSS 119, clause S6.2 table II
2. add small rim diameter sizes that will not meet the larger sizes of the GTR

Proposal to amend the GTR on tyres to incorporate China national tyre requirements.

China proposal for an effort to harmonize GTR 16 with China tyre regulations.

Marked up version of GTR 16 identifying different requirements between the GTR and China’s tyre regulations.

Proposal to develop additional provisions under GTR No. 16 to allow for its alignment with Chinese tyre regulations.

Report of the TyreGTR informal group chair on the group’s 16th session held in Moscow.

Copy of the authorization (AC.3/48) by WP.29 to further develop GTR 16 on tyres.

Copy of the authorization (AC.3/42) by WP.29 to further develop GTR 16 on tyres.

Copy of the draft technical report for Amendment 1 to GTR 16 (GRRF/2016/3) submitted to the Working Party on Brakes and Running Gear.

Copy of the formal proposal (GRRF/2016/2) submitted to the Working Party on Brakes and Running Gear.

Review of references to test specifications across standards and request to consider appropriate harmonized language under paragraph 3.14.3.2. of GTR No. 16.

Marked up working draft of the GTR on Tires as amended by the TyreGTR informal group.

List of approved amendments pursuant to the 15th TyreGTR informal group session.

Presentation from Russia discussing possibility for a system of global tyre markings to signify compliance with GTR No. 16 (Revision 4 in a series of draft proposals on global tyre markings).

Proposal to develop amendments to Part II of GTR No.16:

1. Addition of new definitions (Section 2);
2. Harmonization of the Load Range concept in relationship to Inflation Pressure (Section 2),
3. Alignment of the provisions for tyre marking and physical dimensions of PC tyres with the most recent developments in UN Regulations Nos. 30 and 54 (Sections 3.3 and 3.5),
4. Harmonization of FMVSS 139 requirements relative to UNECE PSI index (Sections 3.14 and 3.15),
5. Deletion of provisions for physical dimensions of LT/C tyres based on FMVSS 139 (Section 3.20) an UN Regulation No. 54 (Section 3.21) and addition of new harmonized provisions for physical dimensions of LT/C tyres (new Section 3.20),
6. Deletion of provisions for high speed test for LT/C tyres based on FMVSS 139 (Section 3.19) and UN Regulation No. 54 (Section 3.16) and addition of new harmonized provisions for high speed test for LT/C tyres (new Section 3.16),
7. Updates of the Annexes 3 and 6 with regard to the most recent developments in UN Regulations Nos. 30 and 54.

Other topics to be discussed within the informal working group for the Phase 2 of development of UN GTR No. 16 include:

1. Consideration of feasibility of harmonization of endurance test for LT/C tyres (Sections 3.16 and 3.17), and
2. Consideration of feasibility of development of provisions for global tyre marking.