| 摘要 |
PURPOSE: It gets near to offset inner ending part, even in that case, the stress concentration can be alleviated. The crack generation from the inner ending part can be controlled. CONSTITUTION: A pneumatic tire comprises a tread unit, a horizontal groove, and a plurality of blocks(5). From a plurality of blocks is the block edge side of the circumference direction groove or the either side in which the thread end edge is. It is extended toward the block width direction inner side. A plurality of blocks comprises a pair of sipping pieces and block having the annulus if. It is each other opposite and a pair of sipping offset inner ending parts is cut. The block having the annulus if comprises the sip assembly. The sip assembly comprises a circularity sipping(8). The circularity sipping is arranged for a pair of sipping offset inner ending parts in the imaginary line which and interlinks the inner ending part interval.
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