With a utility, work, or cargo type trailer i think it matters. With a bass boat trailer you know the load and it is minimal and well within specs for standard load passenger car tires. Get what you want that looks and rides good, imho. The Mastercraft is a Cooper mfg. tire, and is what im running. Hell, when i started runnin a Cat the only place i could get replacement tires was K-Mart ! Turbo -Tech baby !!! And they did good !