Patent ID: 8002006
Filing Date: 2011-08-23
Classification: B60C

Abstract:
1. A runflat tire comprising a tread portion, a pair of sidewall portions, a pair of bead portions each having a bead core therein, a carcass extending between the bead cores, and a sidewall reinforcing rubber disposed axially inside the carcass in each sidewall portion, wherein each sidewall reinforcing rubber is provided with a plurality of grooves extending on an axially inner surface thereof, each of the plurality of grooves has a radially outer end and a radially inner end within the inner surface of the sidewall reinforcing rubber, the grooves are arranged in a circumferential direction of the tire with a pitch P in a range of from 25 to 60 mm, and each has a length of from 30 to 50 mm and a width of from 10 to 20 mm and the grooves include at least one T-shaped groove having a wide width part and a narrow width part being connected to the wide part so that a shape of the groove has a T-shape.