| 摘要 |
A pneumatic tire comprising a tread portion 2 having blocks 7 each provided with sipeings 10 , wherein each sipeing 10 has an opening having a zigzag portion 11 in its opening edge shape J at a block surface S, and opposing wall surfaces in the depth direction Ff which have zigzag displacement portions which are displaced toward one end of the longitudinal direction Fn of the opening and the other end and which are alternately repeated while substantially maintaining the opening edge shape J in the depth direction, and wherein each sipeing 10 satisfies the following equations, <?in-line-formulae description="In-line Formulae" end="lead"?>W 1 >=W 2 (1)<?in-line-formulae description="In-line Formulae" end="tail"?> and <?in-line-formulae description="In-line Formulae" end="lead"?> 0.7 xW 2 >=W 3 > 0, (2)<?in-line-formulae description="In-line Formulae" end="tail"?> in which W 1, W 3 and W 2 are displacement amounts of a zigzag displacement portion 15 U located on the block surface side, a zigzag displacement portion 15 L located on the sipeing bottom side and an intermediate zigzag displacement portion 15 M in a direction Fv perpendicular to the longitudinal direction Fn, respectively.
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