Patent ID: 6488065
Filing Date: 2002-12-03
Classification: B60C,Y10T

Abstract:
A pneumatic radial tire comprising; a pair of bead portions, a pair of sidewall portions, a tread portion, a radial carcass toroidally extending between a pair of bead cores embedded in the bead portions and comprised of at least one rubberized ply containing organic fiber cords therein, and a belt superimposed about a crown portion of the carcass and comprised of at least two belt layers containing steel cords arranged at a given cord angle with respect to an equatorial plane of the tire, and the organic fiber cord for the at least one rubberized carcass ply is a double-twisted polyester cord of 1000-10000 dtex having a dynamic modulus at a tension of 200 g of 4Ã—1010-6Ã—1010 dyn/cm2 and a dynamic modulus at a tension of 1500 g of 6Ã—1010-9Ã—1010 dyn/cm2.