To provide a pneumatic tire capable of reducing pattern noise and suppressing a wandering phenomenon while keeping hydro performance and steering stability good.
At least three main grooves 11 making straight lines are provided on a tread surface 1, and two sub grooves 12 which are linear and thinner/narrower than the all main grooves 11 are provided on both sides of the center main groove 11. A land part 21 is divided in a center area A1 regulated inside of those sub grooves 12, and a land part 22 is divided in an outside area A2 regulated outside of the sub groove 12. A plurality of lug grooves 14 is provided on the land part 22 to divide the land part 22 into a plurality of blocks. At least one of side wall surfaces of each main groove 11 is chamfered, and a cross-section outline shape of a chamfering portion 11a is made to be an arc contacting with the tread surface 1. A ratio of groove width GW2 at a center position in a depth direction to groove width GW1 on the tread surface 1 of each main groove is made to be 30 to 55%.
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Takashi Noguchi
Kazuhiko Saishita