Heavy duty tire having cap and base rubber layers, belt cushion rubber and sidewall rubber

摘要

A heavy duty tire having both an excellent wear resistance and a low rolling resistance and comprising a tread rubber having a two layer structure composed of a cap rubber layer 2Gb and a base rubber layer 2Ga underlying the cap layer, wherein the tread rubber extends axially outward from the tire equator and is bent at its edges to extend radially downward so that the cap layer is located axially outward of the base layer, and a pair of sidewall rubbers are disposed so that the radially outer end portion of each sidewall rubber covers the surface of the axially outer end of the tread rubber.