Proposal to update the test-track references to the recently published ISO 10844:2014.

This proposal aims to align the UN Regulation 106 with international standards (ETRTO, T&RA and ISO 4351-2 table 2). This proposal will also avoid any possible misunderstanding for the application of the EC Regulation 167/2013 that refers to UN R106.

This proposal is an alternative to that represented in document GRRF/2015/9 and GRRF-79-19.

Table of test procedures including plans for phase 2 development of the global regulation on tires.

Proposal to amend the tyre dimensional requirements of UN Regulation No. 30.

Proposal to amend the requirements for the load/speed performance test of UN Regulation No. 30.

Proposal to correct the code 19 rim diameter. The value of the rim diameter is calculated by multiplying the rim diameter code by 25.4 and rounding to the nearest integer. For the code 19 rim, the value should be 483 (482.6 rounded).

Proposal to modify the marking requirements to replace PSI with kilopascals (“kPa”). The intent is to harmonize the pressure indication and avoid confusion between UN Regulation No. 54 and US FMVSS 119 or FMVSS 139.

Proposal to amend the tyre dimension requirements. The current rules for calculating the dimensional limits are not consistent among the UN Regulations for tyres and within the Regulations themselves. Hence they lead to uncertainty in the correct calculation. The current proposal aims at unifying the calculation rules to those used in ISO 4000-1 and all major tyre standards, e.g. ETRTO, Tyre & Rim Association (T&RA), Japan Automobile Tyre Manufacturers Association (JATMA).

Proposal to amend the tyre dimension requirements. The current rules for calculating the dimensional limits are not consistent among the UN Regulations for tyres and within the Regulations themselves. Hence they lead to uncertainty in the correct calculation. The current proposal aims at unifying the calculation rules to those used in ISO 4000-1 and all major tyre standards, e.g. ETRTO, Tyre & Rim Association (T&RA), Japan Automobile Tyre Manufacturers Association (JATMA).

Proposal to align UN R106 with international standards (ETRTO, T&RA and ISO 4351-2 table 2) with regard to Improved Flexion (IF) tyres and Very high Flexion (VF) tyres. This proposal also clarifies the application of EC Regulation 167/2013 which refers to UN R106.

Status of the draft text to introduce provisions for tyre rolling resistance and snow performance testing into the global technical regulation on tyres.

Proposal to change the draft amendments to the 02 series of amendments to Regulation No. 30 regarding tyre dimension requirements.

Document GRRF/2015/27 proposes to modify the marking requirements to replace PSI with kilopascals (“kPa”). The intent is to harmonize the pressure indication and avoid confusion between UN Regulation No. 54 and US FMVSS 119 or FMVSS 139. This proposal would allow for the use of kPa markings in place of PSI prior to the 1 January 2018 transition date.

Proposed additions to the Statement of technical rationale and justification in GTR 16 (tyres), especially to clarify application and future development of the regulation.

ETRTO comments raising concerns over the validity of the Dutch dataset used to support the proposal for higher tyre-noise stringency.

Proposal to modify the marking requirements to replace PSI with kilopascals (“kPa”). The intent is to harmonize the pressure indication and avoid confusion between UN Regulation No. 54 and US FMVSS 119 or FMVSS 139. The proposal would also change the measurement units for drum speed from min^-1 to km.h^-1 in alignment with the requirements with other tyre regulations and align the wording in Annex 7, Appendix 1 with the text of the Regulation.

Proposal to add new tyre sizes to Annex 5 of UN R54.

Proposal to add load indexes to the table in the Annex 4 to keep up with the technical evolution of tyres.

Draft text showing changes made to the GTR on tyres under Amendment 1 (which is primarily aimed at introducing provisions for tyre rolling resistance and performance in severe snow conditions).