New Boristar Blem Trailer Tires in size ST175/80D13 which are 6 Ply (load range C) for only $40 each with Free Shipping. Pallet Pricing available on 12 or more tires! This would be a great Trailer Tire for your Utility, Boat, Camper or Farm Trailers. This Blem bias Trailer Tire will ship smashed flat. When inflated on the rim during mounting the tire will regain its form. They may need to be stretched with a tube, spread with a few boards between the beads or sat in a warm area before mounting.