| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pneumatic tire in which the total capacity of grooves is prevented from increasing and radiation performance of a tread is enhanced.SOLUTION: In the pneumatic tire, narrow grooves, which extend obliquely in a tire circumferential direction and have the groove width smaller than the groove depth, are provided at intervals in the tire circumferential direction. At least one end of the narrow grooves terminates in a land portion. In one end portion of the narrow grooves, inflow portions, which extend in the tire circumferential direction, communicate with the narrow grooves at one end of the narrow grooves and terminate at the other end, are provided only on groove wall faces, which are provided at termination points of tire circumferential components of a first vector going from the one end of the narrow grooves to the other end thereof, of groove wall faces of the narrow grooves opposing in the tire circumferential direction. Between portions combining the narrow grooves and the inflow portions adjacent in the tire circumferential direction, a portion at one side of the outermost end in the tire circumferential direction of one portion separates from a portion at the other side of the outermost end in the tire circumferential direction of the other portion in the tire circumferential direction.</p> |
