PURPOSE: To increase area and strength of a spliced part by forming ends of a tread rubber in the spliced part thereof into a curved or bent configuration, when it is represented by a plan view, in the central region in the width direction of the tread.

CONSTITUTION: Each of the opposite ends of a carcass ply is bent around a bead core from the inside toward the outside of a tire go as to surround a bead filler and a belt layer and a tread rubber 3a are successively stacked on the outer side of the carcass ply in the region of the tread 5 so that the belt layer and the tread rubber 5 are positioned in a circumferential direction of the tire in an annular configuration. The opposite ends of the tread rubber 3a are united together to form a splice S extending across the circumferential direction of the tire. The splice S is formed into a semicircular shape in the central region in the width direction of the tire when it is represented in a plan view, while the spliced ends are inclined in cross-section of the tread. Whereas, the splice can be formed into a V-shape in the circumferential direction in the central region of the tread.