Patent ID: 7475714
Filing Date: 2009-01-13
Classification: B60C,Y10T

Abstract:
1. A pneumatic tire comprising a tread portion, a pair of sidewall portions, a pair of bead portions each having a bead core therein, a carcass and a belt disposed radially outside the carcass in the tread portion, the belt comprising at least two plies, the carcass comprising an inner ply of cords and an outer ply of cords, the inner ply comprising a main portion extending between the bead cores through the sidewall portions and the tread portion, and a pair of turnup portions each turned up around each of the bead cores from axially inside to axially outside of the tire, the inner ply substantially extending in a circumferential direction of the tire continuously, and the outer ply consisting of three to nine circumferentially spaced pieces each having radially inner ends which are not turned up around the bead core, the cords of the inner ply and the cords of each piece of the outer ply being laid at an angle of from 75 to 90 degrees with respect to the tire equator, and in a cross section of the tire including the tire equator, a total circumferential length of the pieces is in the range of from 10 to 30% of a circumferential length of the inner ply.