Pneumatic tire for heavy load vehicles

Claim 1

In a pneumatic radial tire for heavy load vehicles comprising a pair of annular bead bundles, a radial carcass toroidally extending between these bead bundles, and a reinforcing belt superimposed about the carcass and providing a tread composed of a crown portion including the reinforcing belt, the improvement comprising; said tread composed of a relatively flat main region exclusively brought into contact with ground when the tire is normally running and a narrow inclined region located at both side edges of said main region, said narrow inclined region including a number of notches transversely extending said tread and circumferentially spaced apart from each other, said notches arranged circumferentially and spaced from each other by an average distance of 1% to 5% of the width of said main region, said narrow inclined region inclined at an angle within a range from 30° to 60° to a tangent drawn from said tread and extending in parallel with the rotational axis of the tire and being resiliently brought into contact with wheel prints formed on road surface to prevent wandering phenomenon.