| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a tire capable of suppressing generation of cracks in a peripheral direction groove caused by buckling, while suppressing an increase of weight of the tire. <P>SOLUTION: This tire includes a plurality of rib-shaped land parts 21 and land parts 22 extending in a tire peripheral direction. A peripheral direction groove 31 adjacent to the land parts 21 and the land parts 22 to extend in the tire peripheral direction is formed. The peripheral direction groove 31 includes a shallow groove part 40 formed between the land part 21 and the land part 22 adjacent to each other and a deep groove part 50 adjacent to the shallow groove part 40 in the tire peripheral direction and formed between the land part 21 and the land part 22 adjacent to each other. The shallow groove parts 40 have shapes narrower in a tread width direction TW as they go to the tire radial direction inside. The deep groove parts 50 are located on both sides of the tread width direction TW, are formed by sidewall parts 50a along the tire radial direction TR and groove bottom parts 50b continuous to the sidewall parts 50a and along the tread width direction TW, and are recessed to the tire radial direction inside more than the shallow groove parts 40 by making groove bottoms 40c of the shallow groove parts 40 as upper ends. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
