摘要 |
PURPOSE: To provide a pneumatic tire capable of concurrently attaining both of high drainability and high partial wear resistance, in the pneumatic tire of a block pattern having a straight groove and slant grooves. CONSTITUTION: Blocks 4 are partitioned by one straight main groove 2 extended in the circumferential direction T of the tire in the center of a tread surface 1 and transverse grooves 3 extending and inclining on both sides thereof aslant in the cross direction of the tire. Right and left slant main grooves 5 which are inclined on both sides of the straight main groove 2 are arranged so as to cross equal to or more than three transverse grooves 3. Both ends 5a, 5b of the slant main grooves 5 are located in the blocks 4 and groove widths thereof gradually increase from both ends 5A, 5B to a central section 5C. An inclination angleθof the slant main grooves 5 is set to be 10 to 45°, and a maximum groove width W thereof is set to be 80 to 110% of a groove width X of the straight main groove 2.
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