| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a tire suppressing lowering of braking performance caused by buckling, while improving drain property, when a peripheral direction groove is formed in a tread. <P>SOLUTION: In the peripheral direction grooves 31 and 33 formed in a pneumatic tire 1, in-groove channels 310 and 330 recessed more than the peripheral direction grooves 31 and 33 to the tire radial direction TR inside are formed. The in-groove channels 310 and 330 include high-angle groove portions having angles of prescribed angles or more formed by a straight line orthogonal to a tire equator line and the in-groove channels 310 and 330, and low-angle groove portions having angles smaller than the prescribed angles formed by the straight line orthogonal to the tire equator line and the in-groove channels 310 and 330. The high-angle groove portions are located closer to an in-groove center line than the low-angle groove portions. Widths of the high-angle groove portions are wider than those of the low-angle groove portions. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
