Patent ID: 8151841

Claim:
A pneumatic tire comprising: a carcass layer that extends across a pair of bead cores; a belt layer that is arranged on a circumference of the carcass layer in a tire-radial direction; a single reinforcing layer that covers outer side of the belt layer in the tire-radial direction; and a tread portion on each side of a tire equatorial plane that includes at least two circumferential main grooves extending in a tire circumferential direction, and at least three land portions sectioned by the circumferential main grooves, wherein in a cross section in a tire meridian direction, profile lines of the at least three land portions form arcs, an intersection of extension lines of the profile lines of adjacent land portions forms an inflection point in each of the at least two circumferential main grooves between the adjacent land portions, and a first tensile strength of the reinforcing layer in the adjacent land portions is larger than a second tensile strength of the reinforcing layer in the circumferential main groove having the inflection point, and wherein among the at least two circumferential main grooves having the inflection point, the second tensile strength of the reinforcing layer is larger in the circumferential main groove on an outer side in a tire-width direction than in the circumferential main groove on an inner side in the tire-width direction.