Patent ID: 6058996
Filing Date: 2000-05-09
Classification: B60C,Y10T

Abstract:
A pneumatic radial tire comprising:a tread portion,a pair of sidewall portions,a pair of bead portions, each with a bead core therein,a radial carcass extending between the bead portions through the tread portion and sidewall portions and being turned up around the respective bead cores,a breaker belt disposed radially outside the carcass and inside the tread portion and comprising at least two cross plies of high elastic modulus cords laid at an inclination angle of from 15 to 30 degrees with respect to the tire equator, anda band belt disposed radially outside the breaker belt and comprising a full-width band and a pair of axially spaced edge bands,wherein the full-width band is made of low tensile elastic modulus organic fiber cords arranged substantially parallel to the tire equator, the full-width band and the breaker belt having substantially the same width,wherein the edge bands are made of high tensile elastic modulus organic fiber cords arranged substantially parallel to the tire equator,wherein the width of each of the edge bands is between 13% and 26% of a tread portion ground contacting width.