Patent ID: 8302646
Filing Date: 2012-11-06
Classification: B60C

Abstract:
1. A pneumatic tire with main grooves extending in the tire circumferential direction formed on a tread, wherein thin grooves each comprising one upper thin groove extending from a branch point in the depth direction of the main groove on the tread surface side and a plurality of lower thin grooves extending from the branch point in the depth direction of the main groove on the groove bottom side are formed at intervals along the tire circumferential direction in a sidewall of the main groove, a distance B from the groove bottom of said main groove to said branch point is 30 to 60% of a depth D of said main groove, a height L of said thin grooves in the depth direction of the main groove is 50 to 80% of the depth D of said main groove and a length L a transverse depth d of said thin grooves is 0.5 to 1.0 mm, a width w thereof is 0.3 to 1.0 mm, a space P