Patent ID: 7617855

Claim:
A pneumatic tire having a carcass layer which toroidally extends between beads and which is composed of a plurality of carcass plies, a belt layers which is disposed radially outside of the carcass layer, and a tread which is disposed radially outside of the belt layer and which is provided with plural main grooves on the outer circumference, wherein a reinforcing layer is arranged radially inward of all of the carcass plies and disposed in the tread to overlap with said main grooves, wherein steel cords extending in a direction including the tire width direction and its approximate direction are embedded in the reinforcing layer, wherein the width of the reinforcing layer is narrower than the tread width, and wherein a cross angle of the steel cords embedded in the reinforcing layer with respect to the tire equator is within the range from 60 degrees to 90 degrees.