ISO 23671:2021

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ISO 23671:2021 is an international standard that provides a method for determining the wet grip performance of new passenger car tires. It specifies a procedure for measuring the relative braking force coefficient between 80 km/h and 20 km/h under wet conditions. This standard is applicable to all passenger car tires, except for certain special-use tires, temporary spare tires, and tires with additional traction-enhancing devices.