Patent ID: 6742559
Filing Date: 2004-06-01
Classification: B60C,Y10T

Abstract:
A pneumatic tire comprisinga tread portion, a pair of sidewall portions, a pair of bead portions each with a bead core therein, a carcass comprising a carcass main extending from the bead core in one of the bead portions to the bead core in the other bead portion, and a pair of carcass turnups axially outside the carcass main, a tread rubber disposed in the tread portion, a sidewall rubber disposed in each of the sidewall portions, and a wing rubber interposed between the tread rubber and sidewall rubber, each said carcass turnup extends from the axially outside of the bead core to a point in the sidewall portion, while extending from the axially outside of the bead core to the point in the sidewall portion, said carcass turnup approaches the carcass main and adjoins the carcass main from a first radial height to a second radial height and then separates from the carcass main from said second radial height so as to form a separating part, said wing rubber has a JIS type-A durometer hardness of from 45 to 60 degrees, and a radially inner part of the wing rubber is inserted between said separating part and the carcass main, the wine rubber extends from the outer surface of the tire towards the carcass main, and a boundary of the wing rubber and the sidewall rubber extends from the outer surface of the tire to the radially outer end of said separating part, and the length of the boundary is in a range of from 10 to 50 mm.