| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pneumatic tire in which rigidity in a land portion is ensured and furthermore, heat releasing effect in a tread portion is improved.SOLUTION: There are formed in a tread surface 1, narrow grooves 10 each of which extends in an inclined direction relative to tire circumferential direction over extend direction of the tread surface 1 and has groove width W1 smaller than its groove depth D1. At least one end of the narrow groove 10 terminates in a land portion. In at least one of groove wall surfaces 10c facing to the tire circumferential direction of the narrow grooves 10, there is formed an air intake part 11 communicating with the narrow grooves at one end and terminating at the other end. The maximum depth D1 of the narrow grooves 10 and the maximum depth D2 of air intake part 11 meet 1≤D1/D2≤15.</p> |
