Patent ID: 7918256
Filing Date: 2011-04-05
Classification: B60C,Y10S

Abstract:
1. A heavy-duty tire comprising a tread portion, a pair of sidewall portions, a pair of bead portions, a carcass extending between the bead portions through the tread portion and sidewall portions, and a belt disposed radially outside the carcass in the tread portion, wherein when the tire is mounted on a standard wheel rim, inflated to a maximum pressure, and loaded with 100% of a maximum tire load, the tread portion has a ground contacting face which has: a circumferential length L97[W100] measured at a position P97[W100] spaced apart from the tire equator by an axial distance of 97% of one half of a ground contacting width TW[W100]; and a circumferential length L70[W100] measured at a position P70[W100] spaced apart from the tire equator by an axial distance of 70% of one half of the ground contacting width TW[W100], the tread portion has a ground contacting face which has: a circumferential length L97[W70] measured at a position P97[W70] spaced apart from the tire equator by an axial distance of 97% of one half of a ground contacting width TW[W70]; and a circumferential length L70[W70] measured at a position P70[W70] spaced apart from the tire equator by an axial distance of 70% of one half of the ground contacting width TW[W70], and