Patent ID: 6443205
Filing Date: 2002-09-03
Classification: B60C,Y10T

Abstract:
A pneumatic tire comprising:a single carcass layer provided between a pair of left and right bead sections, each of both end parts of said carcass layer in a tire width direction being turned up around a bead core from the inside of the tire to its outside; and a bead apex arranged in an outer peripheral side of said bead core, wherein at least a 30% area of a cross-sectional area of said bead apex positioned in a range of 20 to 35% of a tire section height SH is made of low tan &dgr; rubber which is set in a range of 25 to 75% of tan &dgr; of base bead apex rubber for a bead apex main body, tan &dgr; being measured at a frequency of 20 Hz, an initial strain of 10%, a dynamic strain of Â±2%, and a temperature of 60Â° C.