| 摘要 |
At least one of ground contact pressure, shear stress and amount of skidding is measured at a measurement point (P) on a tread surface (4) of a tire (1). A sensor (3) is arranged on a road surface (2) and the measurement point (P) is made to contact the sensor while the tire rotates. An initial position of the tire is set, where the measurement point is at a previously-set reference position (D 1 ) and the tire is at a running start position on the road surface. The tire is made to run from the initial position to obtain a rotation angle difference ¸ between a tire rotation angle until the rotation axis (O) of the tire passes over the arrangement position of the sensor and a tire rotation angle until the measurement point contacts the road surface. The tire is set at the initial position and rotated by ¸ without changing the running start position of the tire. |
