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| Document Title | UN R117 Standard Reference Test Tyre replacement | ||||||||
| Reference Number | GRBP-71-06 | ||||||||
| Date |
22 Jan 2020
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| Summary | 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. | ||||||||
| Source(s) | ETRTO | ||||||||
| Rulemaking Area(s) | UN R117 Tire Noise, Wet Adhesion, and Rolling Resistance | ||||||||
| Proposal Status | Superseded | ||||||||
| Meeting(s) | |||||||||
| Related Documents | |||||||||
| GRVA/2022/25 | UN R140: Proposal for amendment (superseded) | ||||||||
| Downloads | |||||||||
| UNECE server | .pdf format | .pptx format | |||||||
| Excerpts from session reports related to this document | |||||||||
| GRBP | Session 71 | 28-31 Jan 2020 |
18. The expert from ETRTO reported that, in 2020-2021, the American Society for Testing and Materials (ASTM) would be phasing out the Standard Reference Test Tyre SRTT14 (ASTM E1136) which was referenced in UN Regulations Nos. 108 and 117 (GRBP-71-06). Therefore, these references would need to be replaced by SRTT16 (ASTM F2493) tyre, and the test procedure should be amended accordingly. The Chair invited ETRTO to submit an official document with draft amendments to UN Regulation No. 117 for consideration at the next session. The expert from BIPAVER volunteered to cooperate with ETRTO with the aim to prepare similar amendments to UN Regulation No. 108. |
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