| Worn tyres: Revised Terms of Reference of the Informal Working Group on Wet Grip Performance for Tyres in a Worn State |
| Reference Number: GRBP-77-03 |
| Meeting Sessions: 77th GRBP session (7-10 Feb 2023) |
| Document date: 06 Jan 23 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| A general approach how to handle noise measurement uncertainty |
| Reference Number: GRBP-77-07 |
| Meeting Sessions: 77th GRBP session (7-10 Feb 2023) |
| Document date: 31 Jan 23 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions and UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Proposal for a Revision 2 to the general approach how to handle noise measurement uncertainty |
| Reference Number: GRBP-77-08 |
| Meeting Sessions: 77th GRBP session (7-10 Feb 2023) |
| Document date: 31 Jan 23 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions and UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Noise Measurement Uncertainties informal group status report to GRBP |
| Reference Number: GRBP-77-10/Rev.1 |
| Meeting Sessions: 77th GRBP session (7-10 Feb 2023) |
| Document date: 03 Feb 23 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions and UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Proposal for C1 tyre rolling noise temperature correction update |
| Reference Number: GRBP-77-11 |
| Meeting Sessions: 77th GRBP session (7-10 Feb 2023) |
| Document date: 31 Jan 23 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Rolling sound emission - C1 temperature correction proposal |
| Reference Number: GRBP-77-12 |
|
Proposal from the Noise Measurement Uncertainties informal group for amendments to Annex 3. |
| Meeting Sessions: 77th GRBP session (7-10 Feb 2023) |
| Document date: 31 Jan 23 |
| Document status: Informal GR review |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Request for consideration of a special case during the 78th (August 2023) GRBP session |
| Reference Number: GRBP-77-23 |
|
Request to allocate time on the agenda of the 78th session for consideration of performance requirements for tyres used on heavy-duty pickup trucks designed for professional tasks on rough terrains. |
| Submitted by: AAPC |
| Meeting Sessions: 77th GRBP session (7-10 Feb 2023) |
| Document date: 31 Jan 23 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| WGWT status report to GRBP |
| Reference Number: GRBP-77-30 |
| Meeting Sessions: 77th GRBP session (7-10 Feb 2023) |
| Document date: 09 Feb 23 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Proposal to amend document GRBP/2023/5 |
| Reference Number: GRBP-77-32 |
| Submitted by: ETRTO |
| Meeting Sessions: 77th GRBP session (7-10 Feb 2023) |
| Document date: 09 Feb 23 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Proposal for amendments to Supplement 1 to the 03 series of amendments |
| Reference Number: GRBP/2023/2 |
|
Proposal for the Worn Tyres working group to complete the proposal for Supplement 1 to the 03 series of amendments to UN R117 (adopted by GRBP in September 2022 and submitted to the March 2023 WP.29 session) by adding a detailed reference (F3611-22) for the molded standard reference test tyre (SRTT16). |
| Meeting Sessions: 77th GRBP session (7-10 Feb 2023) |
| Document date: 22 Nov 22 |
| Document status: Approved by GR |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Proposal for amendments to the 04 series of amendments |
| Reference Number: GRBP/2023/3 |
|
Proposal from the Worn Tyres working group to complete the proposal for the 04 series of amendments to UN R117 (adopted by GRBP in September 2022 and submitted to the March 2023 WP.29 session) by adding a detailed reference (F3611-22) for the molded standard reference test tyre (SRTT16). |
| Meeting Sessions: 77th GRBP session (7-10 Feb 2023) |
| Document date: 22 Nov 22 |
| Document status: Formal GR review |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Proposal for amendments |
| Reference Number: GRBP/2023/5 |
|
The existing transitional provisions do not address tyres produced in accordance with the applicable requirements and placed in distribution channels before 7 July 2026. Therefore, a new transitional provision is proposed based on the clause R.4 of part C – “Transitional provisions for replacement parts for vehicles in use” of the General Guidelines for United Nations Regulatory Procedures and Transitional Provisions in UN Regulations. It will clarify that new tyres manufactured before 7 July 2026 and approved according to the 02 or 03 series of amendment will be allowed to be sold and fitted on vehicles in use for additional period not exceeding 30 months from 7 July 2026. |
| Submitted by: EC |
| Meeting Sessions: 77th GRBP session (7-10 Feb 2023) |
| Document date: 22 Nov 22 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Proposal for amendments |
| Reference Number: GRBP/2023/8 |
|
Proposal to delete obsolete footnotes concerning worn tyre wet grip and approvals under UN R117 coincident with approvals under UN R54. The 04 series of amendments to UN R117 introduces the requirements on adhesion of tyres in worn state on wet surfaces for tyres within the scope of UN R54. |
| Submitted by: ETRTO |
| Meeting Sessions: 77th GRBP session (7-10 Feb 2023) |
| Document date: 25 Nov 22 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
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