Radial tires containing polyamide monofilament

A pneumatic radial tire comprising at least one pair of bead portions and at least one carcass ply wrapped around said bead portions wherein each carcass ply comprises a rubberized layer of load bearing polyamide monofilaments wherein the polyamide monofilament is characterized by a denier of greater than 100, and a tenacity of greater than 7.0 g./den, said polyamide monofilaments being the primary load bearing reinforcement in the carcass of said tire, said tire further comprising at least one belt ply containing reinforcing cords which lie at an angle of about 10 to about 30 degrees with respect to the circumferential direction of travel of the tire.