Patent ID: 8020595
Filing Date: 2011-09-20
Classification: B60C,Y10S

Abstract:
1. A pneumatic tire comprising a plurality of land sections divided by a plurality of main grooves in a tread surface and in which the land sections are divided by at least one sipe extending in a tire width direction so that sub-blocks are formed, wherein at least one of the plurality of main grooves is a drain main groove that is principally a drain groove, a plurality of shallow grooves which are shallower than the sipe are formed in the land sections, and a total sectional area of the shallow grooves per unit area in a cross section of the tire width direction, in at least one of tread end areas arranged at end sides of the tread surface in the tire width direction or land end areas adjacent to the drain main groove of the land sections, is larger than the total sectional area of the cross section of the shallow grooves per unit area in other areas of the tread surface, wherein an average depth of the shallow grooves in at least one of the tread end areas or the land end areas is deeper than an average depth of the shallow grooves in the other areas.