| UN R117: Proposal for a Supplement to the 02 series of amendments |
| Reference Number: GRBP/2020/6 |
|
Proposal to adapt the rolling-sound measurement procedures to accommodate special C2 tyres presenting a section width wider than 200 mm, aspect ratio lower than 55, rim diameter code lower than 15 and without any dual fitting indication (i.e. the front size 175/75R15 LT and the rear size 235/50R14 LT or the front size 175/75R15 LT and the rear size 265/50R14 LT). |
| Submitted by: Japan |
| Meeting Sessions: 71st GRBP session (28-31 Jan 2020) |
| Document date: 11 Nov 19 |
| Document status: Superseded |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 R51, UN R117 TF Measurement Uncertainties (MU): Status report |
| Reference Number: GRBP-71-04 |
|
GRBP to note the report from the TF MU on its aim to harmonize measures for evaluating systematic errors and random errors to improve the test procedures. |
| Meeting Sessions: 71st GRBP session (28-31 Jan 2020) |
| Document date: 31 Dec 19 |
| Document status: GR information |
| 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 R51 : Task Force Measurement Uncertainties (TF MU) guidelines to the objectives and rules of procedure |
| Reference Number: GRBP-71-05 |
|
The text proposed by the Chairman of TFMU for the guidelines on the objectives and rules of procedure of the task force. |
| Meeting Sessions: 71st GRBP session (28-31 Jan 2020) |
| Document date: 17 Jan 20 |
| 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 Standard Reference Test Tyre replacement |
| Reference Number: GRBP-71-06 |
|
ETRTO proposal for the replacement of the current Standard Reference Test Tyre as it is being phased out as production will stop mid of 2020. Snow performance test in R117 currently requires SRTT14 as a reference tyre. SRTT14 needs to be replaced and test procedure amended. |
| Submitted by: ETRTO |
| Meeting Sessions: 71st GRBP session (28-31 Jan 2020) |
| Document date: 17 Jan 20 |
| Document status: Superseded |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 R117/108/R109 Status report by the group of interested experts (GOIE ) on snow tyre provisions |
| Reference Number: GRBP-71-20 |
|
The status report submitted by the group of interested experts (GOIE) from Finland, Germany, Japan, Norway, Russian Federation, BIPAVER, ETRTO and OICA |
| Meeting Sessions: 71st GRBP session (28-31 Jan 2020) |
| Document date: 24 Jan 20 |
| Document status: GR information |
| Relevant to: UN Regulation No. 108 | Retreaded Tires for Motor Vehicles, UN Regulation No. 109 | Retreaded Tires for Commercial Vehicles, and UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Working Group on Worn Tyres: Status report |
| Reference Number: GRBP-71-23 |
| Meeting Sessions: 71st GRBP session (28-31 Jan 2020) |
| Document date: 29 Jan 20 |
| 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: Justification for document GRBP/2019/14 |
| Reference Number: GRBP-71-26 |
|
Supporting information regarding the proposal for the type approval of special-use tyres designed for severe snow conditions. |
| Meeting Sessions: 71st GRBP session (28-31 Jan 2020) |
| Document date: 29 Jan 20 |
| 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 the Supplement to the 02 series of amendments |
| Reference Number: GRBP-71-29 |
|
The text submitted by the experts from the European Tyre and Rim Technical Organisation (ETRTO) to amend the Japanese proposal for a Supplement to the 02 series of amendments (ECE/TRANS/WP.29/GRBP/2020/6) |
| Submitted by: ETRTO |
| Meeting Sessions: 71st GRBP session (28-31 Jan 2020) |
| Document date: 29 Jan 20 |
| 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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