Patent ID: 6341636
Filing Date: 2002-01-29
Classification: B60C

Abstract:
A pneumatic tire in which a carcass layer is provided in each of a pair of bead portions, and a plurality of belt layers are arranged outside the carcass layer in a tread, wherein a tire is loaded on a standard rim, a vertical distance from a position of an end in a tire width direction in a region where a first belt layer among a plurality of belt layers between the carcass layer and the tread and the carcass layer contact to each other to a bead core center of the bead portion is set to H when internal pressure of 10% of the maximum air pressure is charged, a side portion extending 55 to 100% of H from a bead core center Q of a bead portion is constituted by an inner layer, made of a compound showing tan &dgr; at 20Â° C. of 0.25 to 1.00, disposed on the outside of the carcass layer and an outer layer, made of a compound showing tan &dgr; at 20Â° C. of 0.15 to 0.20, disposed on the outside of the inner layer.