Patent ID: 7036541
Filing Date: 2006-05-02
Classification: B60C

Abstract:
1. A pneumatic tire comprising a carcass including a carcass ply extending from a tread portion to a bead core of a bead portion through a sidewall portion, and a belt layer having a belt ply arranged inside the tread portion and outside the carcass, wherein a standard grounding surface shape when a standard load is applied to the pneumatic tire in a state in which the tire is assembled into a standard rim and a standard internal pressure is charged into the tire includes an inner region including a shortest grounding length Lm between a central region including a grounding length Lc at a tire equator in which a grounding length L in a circumferential direction of the tire becomes maximum and a tread edge region including a ground length Le at a grounding edge, said grounding length Lm the shorter than the grounding length Lc and the grounding length Le, the shortest grounding length Lm is located in a range apart from the tire equator by a distance of 0.5 to 0.9 times of a tread half width TW, a rubber thickness t additionally, a ratio t