Pneumatic tire

摘要

A pneumatic tire having a tire tread, the tread comprising grooves (27,28,31) therein, the grooves forming tread elements (20,22), the tread having a radially outer surface and a non-skid tread depth as measured from the radially outer surface of the tread, and a radially innermost surface of the grooves, and one or more sunken grooves (30',32') located radially inward and below the surface of the unworn tread, the tread comprising a base tread compound, a radially outer compound, and a radially inner compound, wherein the intersection of the radially outer compound and the radially inner compound is wavy.