TA-52-13
Tyre Abrasion: Co-chairs' report of the 52nd (October 2026) session

The Task Force on Tyre Abrasion convened to address strategic and technical aspects of C3 heavy-duty commercial vehicle tyres. Discussion focused on harmonising market segmentation between European long-haul 22.5" tyres and Japanese all-position tyres under the 1958 Agreement, developing parallel indoor drum and on-road convoy test methods with technological neutrality, and addressing infrastructure funding and test method readiness by March 2030 GRBP adoption and June 2030 WP.29 adoption. Additional topics included Standard Reference Test Tyre incompatibility for trailer axles, simulation tools for tyre type extensions, regulatory definition of tyre type, novel hardware concepts, and the exclusion of retreaded tyres from initial UN R186 scope.

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