| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a pneumatic tire capable of reducing rolling resistance while maintaining steering stability. <P>SOLUTION: This invention is characterized in that a plurality of groove parts 9 extended in the inclined direction against a tire circumferential direction TC are formed on a surface of a buttress part 3 arranged at both outside in a tire width direction TW of a tread part 4, each of the groove parts 9 is arranged along the tire circumferential direction TC, a plurality of reinforcement ribs extended toward a tire radial direction TR from groove walls 9a, 9b are arranged along the groove walls with intervals at the bottom of each of the groove parts 9, and the reinforcement ribs are configured with a first rib 11 which gradually reduces height on the opposite groove walls from one of the groove walls 9a toward the another of the groove walls 9b and a second rib 12 which gradually reduces height on the groove walls from the another of the groove walls 9b toward the one of the groove walls 9a. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
