Patent ID: 7290579
Filing Date: 2007-11-06
Classification: B60C,D07B

Abstract:
1. A pneumatic tire for a motorcycle comprising a pair of bead portions, a carcass wound around a bead core embedded in the respective bead portion, a tread portion arranged on an outside of a crown portion of the carcass and a pair of sidewall portions extending inward from both ends of the tread portion in a radial direction of the tire, in which the bead core is a cable bead and a geometric second moment coefficient Σ(π/64×d 4 ) of the bead core (wherein d is a diameter of each filament constituting the bead core except for a core wire) satisfies an equation of 0.50<Σ(π/64×d 4 )<1.50, wherein the bead core is a multi-layer cable bead.