| 摘要 |
To provide a pneumatic tire for a motorcycle in which both wear resistance and wet steering stability can be attained. Since a pair of zigzag circumferential direction grooves 28 are positioned at the center of a tread central region 24 C and has an amplitude, even when a certain camber angle is exceeded, an occurrence of a sudden separation of the zigzag circumferential direction groove 28 from a road-contact surface 26 can be prevented, whereby deterioration of wet steering stability can be suppressed. When the camber angle increases, water in a road-contact surface 26 is drained by inclining grooves 32 which are arranged at an external side of the zigzag circumferential direction groove 28 . Since sharp inclining groove portions 32 A of the inclining grooves 32 are positioned in the tread central region 24 C, and no lug groove components are employed, circumferential direction rigidities of land portions in the tread central region 24 C are high and exhibits excellent wear resistance. Since loose inclining groove portions 32 B and sub-inclining grooves 38 of the inclining grooves 32 are positioned in tread side regions 24 S, rigidities of land portions 40 resisting to inputs at the time of a large camber angle are high, and accordingly, wear resistance is high. |
