| 摘要 |
PURPOSE:To provide a pneumatic tire wherein a noise as a blow out sound, generated when suddenly discharged air flows in a tread groove in a tire grounded surface, is reduced and further drainability is maintained, in the case of running on dry road surface. CONSTITUTION:In a pneumatic tire 1, a pair of side walls and a tread part 2 astride between both the side walls are toroidally connected and in the tread part 2, at least one main peripheral groove 5 and at least one subperipheral groove 6 substantially parallel relating to a plane, containing respective tread circumference in a tread part central region 3 and its both shoulder regions 4 over the total periphery of the tread part 2, are provided. Further, the tire has a lateral groove 7 arranged toward respective tread part groove 10 from the subperipheral groove 6, and the subperipheral groove 6 is formed by connecting a broad and narrow width parts W2, W1 with a circumferential space in accordance with an arranging pitch of the lateral groove 7, and also connecting its one end to the narrow width part W1. |
