A radial ply tire including a tread reinforcing breaker package comprising at least one ply of tire breaker fabric characterized in that the cords in both edge regions of the single radially outermost ply of the breaker package are inclined to the circumferential centerline of the breaker package at opposite acute angles so that the cords in said edge regions are in relative "V" shaped formation and the tire is marked by a directional marker pointing in the opposite direction of the "V" formation so that the tire may be fitted to a vehicle with the marker in the direction of rotation for a non-driven wheel and in the opposite direction for a driven wheel so that the greatest torque forces are applied to the breaker ply in the direction of the "V" formation.The outermost ply may be side by side strips or cord laid in a "V" formation.