PURPOSE: To prevent carcuss ply cords from breaking off and also prevent the steering stability of a vehicle from lowering.

CONSTITUTION: The angle of cords which form a carcuss ply is 75 to 88° relative to the circumferential direction of a tread, the ends of a carcuss 4 are wound up around the periphery of a bead core from the inside to the outside, and these wound-up ends are positioned at the inner periphery side of a belt layer apart from each other. Also, in a tire shoulder section 7 where a space of 0.5 to 5.0 times a carcuss ply cord diameter is provided between a main body section 4a and a wind-up end section of the carcuss 4, the extending directions of ply cords of the carcuss main body section 4a which are located at the wind-up ends of the carcuss 4 are reversed to each other between two tires relative to the circumferential direction of the tread.