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New design C3 standard reference test tyres
Document GRBP-78-28/Rev.1
25 August 2023
Submitted by ETRTO
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Previous Documents, Discussions, and Outcomes
7. (d) | UN Regulation No. 117 (Tyre rolling resistance, rolling noise and wet grip)
7. (c) | UN Regulation No. 117 (Tyre rolling resistance, rolling noise and wet grip)

20. The expert from ETRTO introduced a new design of the C3 Standard Reference Test Tyres (SRTTs) that are used as reference tyres for snow grip and wet adhesion performance (GRBP-78-28-Rev.1). The expert for Japan posed a question. The Chair invited ETRTO to submit a working document for consideration at the next session.

Related and Previous Documents
GRBP/2024/7
Relates to UN R117 |