Patent ID: 8327898
Filing Date: 2012-12-11
Classification: B60C,Y10T

Abstract:
1. A pneumatic tire, comprising a carcass including a carcass main body constituted of a ply which is made by rubber coated plural cords extending in a toroidal shape across a pair of bead cores, and a carcass ply fold-up portion constituted of the ply folded up around each bead core from the carcass main body side at the tire inner side, toward the tire outer side to extend the outer side in the tire radial direction, wherein: a cord distance between the carcass main body and the carcass ply fold-up portion gradually decreases from the bead core toward the outer side in the tire radial direction to reach a minimum value a, then gradually increases to a maximum value b; provided that a height H a value of ratio (b/a) of the maximum value b with respect to the minimum value a of distance between cords of the carcass main body and the carcass ply fold-up portion exceeds 1.00, and the minimum value a and the maximum value b are disposed at intermediate positions along the carcass ply fold-up portion in the tire radial direction.