| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To simultaneously improve travelling performance such as a brake traction property, etc. and secure crack resistance of a sipe. <P>SOLUTION: The sipes 5a, 5b each one side of which is opened in a central region 1a of a tire tread part 1 are alternately arranged, a groove wall part of a lateral groove having height in a range of more than 0.25 time and less than 0.75 time with depth of the lateral groove as a standard is projected from another groove wall part on a part of the lateral groove facing an end part in the cross direction where land part rigidity on the opening sides of the sipes 5a, 5b, the one side opened sipes 5a, 5b are arranged only in a direction to open to the central side in a shoulder region 1b and the whole of the lateral groove 3 is bottomed up in a region more than 0.5 time and less than 0.75 time against depth of the lateral groove 3 in the central region. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
