A tire comprising: a toroidal carcass, and a tread reinforcing layer disposed radially outside the carcass in a tread portion, and comprising a reinforcing part formed from a rubber-coated cord strip of one or more reinforcing cords covered with topping rubber, wherein the reinforcing part is formed of the rubber-coated cord strip being folded alternately toward opposite directions at a first edge and a second edge of the reinforcing part so as to extend circumferentially of the tire, whereby the reinforcing part is composed of inclined segments, first edge segments and second edge segments of the rubber-coated cord strip, wherein the inclined segments all extending between the first edge and the second edge while inclining to one direction with respect to the tire circumferential direction, and spaced apart from each other in the tire circumferential direction, and the circumferentially adjacent inclined segments are connected by the first edge segments at the first edge and connected by the second edge segments at the second edge alternately with the first edge segments, characterized in that the reinforcing part includes a first reinforcing part arranged in a first shoulder region of the tread portion, a second reinforcing part arranged in a second shoulder region of the tread portion, and a third reinforcing part disposed in a crown region of the tread portion, and the third reinforcing part is formed from a rubber-coated cord strip wound spirally and circumferentially of the tire more than one turn. a toroidal carcass, and a tread reinforcing layer disposed radially outside the carcass in a tread portion, and comprising a reinforcing part formed from a rubber-coated cord strip of one or more reinforcing cords covered with topping rubber, wherein the reinforcing part is formed of the rubber-coated cord strip being folded alternately toward opposite directions at a first edge and a second edge of the reinforcing part so as to extend circumferentially of the tire, whereby the reinforcing part is composed of inclined segments, first edge segments and second edge segments of the rubber-coated cord strip, wherein the inclined segments all extending between the first edge and the second edge while inclining to one direction with respect to the tire circumferential direction, and spaced apart from each other in the tire circumferential direction, and the circumferentially adjacent inclined segments are connected by the first edge segments at the first edge and connected by the second edge segments at the second edge alternately with the first edge segments, characterized in that the reinforcing part includes a first reinforcing part arranged in a first shoulder region of the tread portion, a second reinforcing part arranged in a second shoulder region of the tread portion, and a third reinforcing part disposed in a crown region of the tread portion, and the third reinforcing part is formed from a rubber-coated cord strip wound spirally and circumferentially of the tire more than one turn. a first reinforcing part arranged in a first shoulder region of the tread portion, a second reinforcing part arranged in a second shoulder region of the tread portion, and a third reinforcing part disposed in a crown region of the tread portion, and the third reinforcing part is formed from a rubber-coated cord strip wound spirally and circumferentially of the tire more than one turn.