Patent ID: 6901983

Claim:
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 1 from an upper end position RE of said first reinforcing rubber layer to an end BE of said belt layer is in the range of 3% to 20% of the width BW of the belt layer; an overlapping width W 2 from an upper end position RF of the second reinforcing rubber layer to the end BE of said belt layer is 7% to 33% of the width BW of the belt layer; and 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.