Proposal to clarify tyre abrasion provisions, including to add an ice temperature range of -5°C to -2°C to the test conditions for ice grip tyres.
11. The expert from Japan tabled an amendment proposal on the test conditions for ice grip tyres (ECE/TRANS/WP.29/GRBP/2025/26). The expert from ETRTO pointed out that the proposal concerned a real-life situation (wet ice) that was not considered by the current ice grip test conditions in UN Regulation No.117 and proposed developing a new Annex to this end (GRBP-82-26). He also mentioned that this topic was being considered by one of the ISO Working Groups. Awaiting the outcome of the ISO consideration, GRBP agreed to revert to the issue at the next session.
11. The expert from Japan tabled an amendment proposal on the test conditions for ice grip tyres (ECE/TRANS/WP.29/GRBP/2025/26). The expert from ETRTO pointed out that the proposal concerned a real-life situation (wet ice) that was not considered by the current ice grip test conditions in UN Regulation No.117 and proposed developing a new Annex to this end (GRBP-82-26). He also mentioned that this topic was being considered by one of the ISO Working Groups. Awaiting the outcome of the ISO consideration, GRBP agreed to revert to the issue at the next session.