Pneumatic Tire

摘要

The pneumatic tire 1 includes a belt layer 14 that includes a circumferential reinforcing layer 145 and a pair of cross belts 142, 143. Also, the pneumatic tire 1 includes at least three or more circumferential main grooves 21 to 23 in the tread portion having groove bottoms that are convex in the groove depth direction. Also, the curvature radius RA of the groove bottom of an arbitrary first circumferential main groove 21, 22 and the curvature radius RB of the groove bottom of an arbitrary second circumferential main groove 23 have the relationship RA

主权项

1. A pneumatic tire that includes a belt layer having a circumferential reinforcing layer and a pair of cross belts, comprising:
at least three or more circumferential main grooves having groove bottoms that are convex in the depth direction in a tread portion, wherein in a cross-sectional view in the tire meridian direction, of the circumferential main grooves, when a circumferential main groove having the circumferential reinforcing layer below the groove is referred to as a first circumferential main groove, and the other circumferential main grooves are referred to as second circumferential main grooves, the curvature radius RA of the groove bottom of an arbitrary first circumferential main groove and the curvature radius RB of the groove bottom of an arbitrary second circumferential main groove have the relationship RA