ISO 23671:2021

International Standard   Current Edition
· Approved on 15 June 2021 ·

Passenger car tyres — Method for measuring relative wet grip performance — Loaded new tyres

Road vehicle tyres
Including cycle tyres, and tyre retreading and repair processes

ISO 23671:2021 Files

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Current Edition

ISO 23671:2021 Scope

This document specifies the method for measuring relative wet grip braking performance index to a reference under loaded conditions for new tyres for use on passenger cars on a wet-paved surface.

The methods developed are meant to reduce variability. The use of a reference tyre is necessary to limit the variability of the testing procedures.

This document applies to all passenger car tyres except for:

—    special-use tyres marked with "ET";

—    T-type temporary spare tyres;

—    tyres fitted with additional devices to improve traction properties (e.g. studded tyres).

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