Pneumatic tire

A pneumatic tire comprising a reinforcing belt arranged in a belt layer which goes around in a tire tread part in a tire circumferential direction, wherein

• the reinforcing belt comprises plural steel cords arranged in parallel over overall length thereof, covered with a rubber,
• the steel cord of the reinforcing belt is arranged such that an angle θ between the steel cord and a tire circumferential direction satisfies a range of 0.9πR≦W/tan θ≦1.1πR when a reinforcing belt width is W and a reinforcing belt diameter is R,
• the reinforcing belt in its developed state shows a parallelogram comprising circumferential direction sides having the same length, parallel to a tire circumferential direction, and inclined sides connecting edges of the circumferential direction sides, a length of the circumferential direction side is a circumferential length πR of the reinforcing belt, a length of the inclined side is a length of the steel cord, and a distance of two circumferential direction sides is a reinforcing belt width W, and
• the steel cord is arranged in parallel to the inclined sides.