To provide a pneumatic tire which is reduced in weight without impairing the exterior damaging resistance.
In the pneumatic tire, a recessed area B in which recessed parts 11 extending in the tire radial direction at the angle θ of inclination with respect to the tire circumferential direction Z of 30-90° are formed at a predetermined pitch in the tire circumferential direction Z is provided in an area A between the tire maximum width position M and the intersection position N of an outer surface 10 of a side wall part 2 so as to maintain the width which is one half of the width W in the tire radial direction of at least the area A. In the pneumatic tire, the weight reduction ratio d/a g/p expressed by the product of d/a and g/p is set to be 0.05-0.30, and d/a is set to be ≤ 0.50, where a is the depth from an outer surface 10 to a carcass layer 4, and d, g and p are the depth, the width and the pitch of the recessed part 11, respectively.
SHIMIZU MICHIO
Takashi Noguchi
Kazuhiko Saishita