Abstract: A pneumatic tire is provided in the tread portion with major oblique grooves disposed staggeredly on both sides of the tread pattern's center line, and plural minor oblique grooves disposed between the circumferentially adjacent major oblique grooves. The major and minor oblique grooves extend toward the counter-tire-rotational direction while increasing the angle with respect to the circumferential direction. When the axial width between the tread pattern's center line and a tread edge is evenly partitioned into 1st to 5th zones in this order from the center line, the angle ? of the major oblique groove satisfies: ?1<?2=<?3=<?4=<?5 and ?5??1=50 to 110 degrees, wherein ?1 to ?5 are mean values of the angle ? in the 1st to 5th zones. Each major oblique groove is provided in the 1st or 2nd zone with a bent point at which the angle ? changes at least 30 degrees.

Abstract: A pneumatic tire is provided in the tread portion with major oblique grooves disposed staggeredly on both sides of the tread pattern's center line, and plural minor oblique grooves disposed between the circumferentially adjacent major oblique grooves. The major and minor oblique grooves extend toward the counter-tire-rotational direction while increasing the angle with respect to the circumferential direction. When the axial width between the tread pattern's center line and a tread edge is evenly partitioned into 1st to 5th zones in this order from the center line, the angle ? of the major oblique groove satisfies: ?1<?2=<?3=<?4=<?5 and ?5??1=50 to 110 degrees, wherein ?1 to ?5 are mean values of the angle ? in the 1st to 5th zones. Each major oblique groove is provided in the 1st or 2nd zone with a bent point at which the angle ? changes at least 30 degrees.