Patent ID: 6758253
Filing Date: 2004-07-06
Classification: B60C,Y10T

Abstract:
A pneumatic tire for use in four-wheeled vehicles comprising:a tread portion, a pair of sidewall portions, a pair of bead portions, a radial carcass extending between a pair of bead cores embedded in the respective bead portions to reinforce these portions and having a turnup portion wound around each bead core from an inside of the tire toward an outside thereof, a bead filler rubber of a triangular shape at section taperingly extending from the bead core toward an end of the tread portion and having a JIS hardness at 30Â° C. of 65-83, a reinforcing cord layer arranged at a side face zone ranging from the bead portion to the sidewall portion, in which the reinforcing cord layer is a layer of one or more rubberized cords spirally wound about an axial line of the tire and has an inner end in a radial direction of the tire between a position located outward from an outer periphery of the bead core in the radial direction and a position located inward from a tapered end of the bead filler rubber in the radial direction, and a reinforcing sheet rubber extending toward the end of the tread portion and arranged along a tapered end portion of the bead filler rubber so as to contact therewith and having an even thickness of not more than 2 mm and a hardness substantially equal to that of said bead filler rubber.