A method of estimating the transverse grip of a pair of tires intended to equip a two-wheeled vehicle by comparative analysis against another pair of tires. The tires are mounted on the vehicle in pairs, the vehicle is run in a circle of set radius until it attains the maximum speed with grip, and the mean speed and/or the mean cornering angle of the vehicle under steady state conditions and/or the mean lap time is/are determined.
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