Patent ID: 7559349
Filing Date: 2009-07-14
Classification: B60C,Y10T

Abstract:
1. A pneumatic tire, comprising: a carcass containing at least one toroidal carcass ply, a tread rubber arranged radially outwardly on the crown portion of the carcass, and a belt consisting of at least one belt layer arranged between the tread rubber and the carcass, said belt layer containing cords extending in a direction inclined from the tire's circumferential direction, wherein at least one circumferential reinforcement layer containing meandering cords extending generally along the tire's circumferential direction in a wavy or zigzag shape is provided radially outwardly or inwardly on the belt or between the belt layers, and at least one transversal reinforcement layer containing straight cords extending generally perpendicular to the tire's circumferential direction is provided on the position radially outwardly adjacent to the crown portion of the carcass, wherein the ratio of the sum of the transversal strengths of the carcass, the transversal reinforcement layer, the circumferential layer and the belt including their coating rubbers to the sum of the circumferential strengths of them is 0.55 or more at the tire's equatorial plane.