Patent ID: 8079393

Claim:
A pneumatic tire having a carcass consisting of at least one toroidal carcass ply and a belt consisting of at least two belt layers containing rubberized cords and arranged in the outer circumferential side of a crown portion of the carcass, the cords of adjacent belt layers being crossed with each other with respect to an equatorial plane of the tire to form cross belt layers, wherein the widest belt layer among the belt layers constituting the belt is a folded belt layer having a body portion which forms the cross belt layers with another adjacent belt layer and a folded portion which extends from at least one width terminal end of the body portion and is formed by folding back on the outer circumferential side of the body portion, the cords of both the folded belt layer and the another adjacent belt layer forming an angle with the equatorial plane of the tire having the same value within a range from 20 to 50 degrees, and wherein a cord constituting the folded belt layer is an organic fiber cord, and wherein one narrow belt reinforcing layer of rubberized cords is arranged at least immediately below the width terminal end of the body portion of the folded belt layer which terminal end abuts on the folded portion, and wherein the belt reinforcing layer extends to a widthwise end located between 10 mm and 100 mm inwardly in the width direction of the tire from the position immediately below the width terminal end of the body portion of the folded belt layer, the cords of the belt reinforcing layer either inclining in the same direction as the cords in the body portion of the folded belt layer with respect to the equatorial plane of the tire and forming an angle with the equatorial plane of the tire within a range from 10 to 60 degrees or inclining in the opposite direction to the cords in the body portion of the folded belt layer with respect to the equatorial plane of the tire and forming an angle with the equatorial plane of the tire within a range from 20 to 70 degrees, wherein the another adjacent belt layer is arranged on the outer circumferential side of the folded belt layer and the folded belt layer envelops the width terminal ends of the another adjacent belt layer with its body portion and pair of folded portions, and wherein each belt reinforcing layer is folded back on the outer circumferential side of the folded belt layer along with the respective folded portion of the folded belt layer, the width of the outside folded portion of the belt reinforcing layer being 40%-60% of the width of the respective folded portion of the folded belt layer.