| 摘要 |
In order to improve both ground-contact performance and on-ice performance of a tire, a plurality of blocks (14) on the tread surface have a plurality of sipes (151 to 156) formed on the tire depression side thereof, and at least one or both of the sipes (151, 156) located on the ends of each block (14) in the circumferential direction have at least two bent portions (P2, P3) in the radial direction of the tire and have sipe centerlines that are inclined relative to the tire radial direction, said sipe centerline (1n: n = 1 to 6) being a straight line joining a sipe uppermost portion (P1), which is an opening end into the surface (14k) of the block (14), and a sipe lowermost portion (P4), which is the innermost portion in the tire radial direction. The sipes (151 to 156) are formed so that the absolute value of a radial inclination angle (α), which is the angle formed by the tire radial direction and the sipe centerline of the sipes (151, 156) located on the ends of the block (14) in the circumferential direction, is greater than the absolute value of the radial inclination angle (β) of the sipes (152 to 155) located in the center. |
