ST (special trailer) tires are the best for trailers, according to TIRERACK.com. They are made not to wear out when mounted and used properly, and they feature materials to meet higher load requirements.
ST tires do not wear out as easily as other tires, according to DiscountTire.com. They will last from 5,000 to 12,000 miles with routine maintenance.
When buying trailer tires, make sure they are all of identical size. Improperly sized tires will not manage the weight of the trailer correctly. ST tires have a maximum speed of 65 miles per hour. Drivers should never inflate ST tires beyond the maximum rated pressure listed on the outside of the tire.
Although not as good, LT (light truck) tires also work on trailers. LT tires are slightly different in that they are not made with the same heavy-duty materials as ST tires.
Goodyear Marathon and Power King Towmax tires are designed to work well at slightly higher speeds. These tires are more expensive, but allow drivers to travel at speeds of up to 75 miles per hour. These tires have an increased cold inflation pressure, making them stable for use on a trailer.
When shopping for trailer tires, be sure to look at the manufacturer's warranty as they are all slightly different. Also, check the load carrying capacity and the tire's speed rating.