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, W1.gtoreq.W2 (1) and 0.7.times.W2.gtoreq.W3>0,
(2) in which W1, W3 and W2 are displacement amounts of a zigzag
displacement portion 15U located on the block surface side, a zigzag
displacement portion 15L located on the sipeing bottom side and an
intermediate zigzag displacement portion 15M in a direction Fv
perpendicular to the longitudinal direction Fn, respectively.