The UN203 ST TRAILER from Mastertrack is an all-season trailer tire that offers excellent durability thanks to its reinforced internal structure that maintains the optimal shape of the tire footprint on the ground under load. The ST size designation means it can only be used on trailers. The ribbed design provides a firm grip on the road surface and gives improved traction in dry, wet and winter conditions. The radial construction protects against road hazards and reduces heat generation even under heavy loads.