| 摘要 |
A tyre for a motorcycle has a tread surface 10 in which are recessed a plurality of channels none of which extend around the entire circumference of or across the entire width of the surface 10 and at least some of which (e.g. 12, 14, 22, 24) are entirely surrounded by surface 10. The illustrated tread has a series of channels 12 inclined at an equal and opposite angle to a circumferential line of the tyre 8 and circumferentially staggered relative to the channels 14 of another series. Two additional series of channels 22, 24 extending at approximately 90 DEG to the channels 12, 14 respectively are also provided, as are channels 38 opening into the tread edges. In alternative embodiments all channels are bounded by surface 10, and substantially Z-shaped channels are provided. <IMAGE>
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