To provide a pneumatic tire which regulates the movement of groove bottom portions of main grooves to improve the driving stability performance while preventing a peaky behavior, and a method for manufacturing the pneumatic tire.

The pneumatic tire is provided on the tread surface Tr with main grooves 8 extending in the tire circumferential direction, and land portions 9 partitioned by the main grooves 8. Reinforcing materials 10 each curved in a U-shaped cross section are embedded along the groove bottom portions of the main grooves 8 in the inner area of the main grooves 8. The reinforcing materials 10 are omitted in the inner area of the land portions 9 adjacent to the main grooves 8.