Patent ID: 6505661
Filing Date: 2003-01-14
Classification: B60C

Abstract:
A pneumatic tire comprisinga wide groove having a bottom width of not less than 20 mm and disposed in a tread portion, the wide groove provided with two longitudinal ribs, intermediate ribs and lateral ribs, said two longitudinal ribs each extending in the longitudinal direction of the wide groove and each disposed on the groove bottom of said wide groove at a distance of from 2 to 8 mm from one of edges of the groove bottom towards the center of the wide groove, the two longitudinal ribs each having a height of 0.2 to 1.5 mm, said intermediate ribs disposed on the groove bottom between the two longitudinal ribs and each extending from one of the two longitudinal ribs towards the other, the intermediate ribs each having a height of 0.2 to 1.5 mm, said lateral ribs each extending from one of the two longitudinal ribs towards a tread face through the groove bottom and a groove wall of the wide groove.