| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motorcycle tire for off-road traveling capable of improving crack resistance based on the premise that a chamfering portion having a convex arc-like curved surface is formed at an intersection portion of a shallow groove bottom surface formed on a block and the outer wall surface of the block. <P>SOLUTION: The motorcycle tire 1 for off-road traveling comprises a tread 2 having a plurality of blocks B. At least one of the blocks B has a shallow groove 17 having a depth D1 of 10 to 50% of the height H1 of the blocks B to provide a shallowly-grooved block 16 in which the block is divided into at least two block segments 16s by the shallow groove 17. The shallow groove has both ends opened on outer wall surfaces 12 of the shallowly-grooved block and it has groove wall surfaces 17w extending radially inwardly of the tire from the tread surface 11 of the block B and a bottom 17b connecting the groove wall surfaces 17w. Intersection portions 18 between the bottom 17b and the outer wall surfaces 12 are chamfered to form chamfered portions 19 having convex circular arc-like curved surfaces. <P>COPYRIGHT: (C)2012,JPO&INPIT |
