| 摘要 |
<p>A pneumatic tire has a main groove extending along a tire circumferential direction in a tread surface. A plurality of projections having different heights are provided in a groove bottom of the main groove in such a manner that an outer peripheral surface is inclined so as to repeat trough portions depressed to an inner side in a tire diametrical direction and peak portions protruding to an outer side in the tire diametrical direction along the tire circumferential direction.</p> |
