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Trailer tires are some highly abused components. If you have a two-axle trailer you'll find the tires do a lot of scrubbing when turning, and when loaded they support not only the weight of your vehicle but also the weight of the trailer. We outfitted our trailer with a set of Goodyear's new Unisteel G149 RSA tires that have a load E and G rating. This will result in a 3,000-pound-capacity per tire at 80 psi and a 3,750-pound rating at 110 psi. Be sure to check that your wheels and valve stems are rated to support the high pressures and loads from the trailer weight, and keep the pressure up in the tires to help them live longer. Also put your trailer on a scheduled maintenance program to keep all the bearings lubed and suspension bolts checked for proper tightness.