Pneumatic Tire

摘要

A pneumatic tire includes at least three circumferential main grooves that extend in the tire circumferential direction, and land portions that are partitioned and formed by these circumferential main grooves. In addition, a belt layer is formed by laminating a pair of cross belts each having a belt angle of not less than 10° and not more than 45° as an absolute value and having mutually opposite signs, and a circumferential reinforcing layer having a belt angle within a range of ±5° with respect to the tire circumferential direction. In addition, in a cross-sectional view taken along the tire meridian direction, a diameter D1 at a point at an edge portion on the inner side of a shoulder land portion in the tire width direction and a diameter D2 at a predetermined point within the ground-contact surface of the shoulder land portion have a relationship such that D2

主权项

1. A pneumatic tire comprising:
a carcass layer; a belt layer disposed on an outer side of the carcass layer in a tire radial direction; a tread rubber disposed on an outer side of the belt layer in the tire radial direction; at least three circumferential main grooves extending in a tire circumferential direction; and a plurality of land portions partitioned and formed by the circumferential main grooves, the belt layer being formed by laminating a pair of cross belts each having a belt angle of not less than 10° and not more than 45° as an absolute value and having mutually opposite signs, and a circumferential reinforcing layer having a belt angle within a range of ±5° with respect to the tire circumferential direction, among the circumferential main grooves, left and right circumferential main grooves on an outermost side in a tire width direction being referred to as an outermost circumferential main groove, and a land portion closer to an outer side in the tire width direction than the left and right circumferential main grooves on the outermost side being referred to as a shoulder land portion, and in a cross-sectional view taken along a tire meridian direction, a diameter D1 at a point P1 on an edge portion on an inner side of the shoulder land portion in the tire width direction, a diameter D2 at a predetermined point P2 within a ground-contact surface of the shoulder land portion, and a diameter D3 of a tire ground contact edge T having a relationship such that D2