Patent ID: 8100159

Claim:
A pneumatic tire with not less than three main grooves extending in the tire circumferential direction, and ribs formed by two of the main grooves, wherein upper edges of at least one of the main grooves when the tire is new extend in a linear manner in the tire circumferential direction, the bottom of the at least one of the main grooves extends in a zigzag manner in the tire circumferential direction, the sidewalls of the at least one of the main grooves are provided with concave portions and convex portions, in the concave portions of at least one of the sidewalls of the at least one of the main grooves, protrusions that are joined to the bottom of the at least one of the main grooves and to the sidewall are provided, and the pneumatic tire is provided with notches that extend from the concave portions to the inner side of the rib in the tire width direction and the width of the notches gradually narrows from the concave portions to the inner side of the rib.