Patent ID: 7441576
Filing Date: 2008-10-28
Classification: B60C,Y10T

Abstract:
1. A pneumatic tire comprising a carcass comprised of one or more carcass plies toroidally extending between a pair of bead portions, a tread rubber arranged at an outer peripheral side of a crown portion of the carcass, a belt arranged between the tread rubber and the carcass and comprised of two belt layers, cords of which layers being crossed with each other and extending in an inclination angle of 45-80° with respect to a circumferential direction of the tire, and two circumferential strengthening layers having the same width arranged at an inner peripheral side of the belt and containing wavy or zigzag cords extended substantially in the circumferential direction of the tire, in which a width of a belt layer located at the inner peripheral side is made larger than the width of the two circumferential strengthening layers and a width of a belt layer located at the outer peripheral side is made smaller than the width of the two circumferential strengthening layers, and the width of each of the two circumferential strengthening layers is 60-80% of a tire section width, and the width of the belt layer located at the inner peripheral side is 80-90% of the tire section width, and the width of the belt layer located at the outer peripheral side is 20-50% of the tire section width.