| 摘要 |
A radial cord carcass tyre has blocks arranged in two rows which are separated from one another axially of the tyre by a zig-zag-shaped groove, the rows and the groove extending circumferentially of the tyre. Each block extends transversely of the tyre and is separated from its neighbours in the respective row by transverse slots. The groove is less deep than the slots. Each block is formed from three conjoined leg portions 5, 6, 7 so arranged relatively to one another as to make a zig-zag. The leg portions of the zig-zag make included angles with the mid- circumferential plane 8 which increase as one moves from said plane towards the respective tyre shoulder. The included angles preferably fall into the ranges from 35 DEG to 45 DEG , from 55 DEG to 65 DEG and from 70 DEG to 80 DEG , respectively. The groove depth is at least three- quarters of the slot depth. <IMAGE> |
