Patent ID: 6901983
Filing Date: 2005-06-07
Classification: B60C,Y10T

Abstract:
1. A pneumatic tire, comprising: at least one carcass ply having steel cords arranged substantially in a radial direction of the tire, folded turned up around a bead core; a belt layer arranged on an outer side of a crown portion of said at least one carcass ply to have an overlapping portion with the folded portion of said at least one carcass ply; a first reinforcing rubber layer arranged between a body portion of said at least one carcass ply and said folded portion thereof; and a second reinforcing rubber layer arranged inside the body portion of said at least one carcass ply, over a region from a tire shoulder portion to a bead portion, with its thickness gradually reduced from a central portion to opposing end portions; wherein overlapping width W an overlapping width W thickness RW of said second reinforcing rubber layer on a line TL connecting the end BE of the belt layer and a tread end TE is 5% to 25% of total thickness SW of the tire on the line TL.