| 摘要 |
A pneumatic tire provided with a tread pattern having at least one generally circumferentially extending groove having limbs of zig-zag plan form, wherein the base of the groove is of constant width, the width at the mouth of the groove adjacent to a junction is greater than the groove mouth width intermediate the junctions and the change from wider to narrower groove width is graduated so that there is a reduced tendency for the grooves to trap stones during use of the tire.
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