They are not trailer tires to be clear, they are light truck tires. LT235/75R15 load range E 10 ply 80psi max, it's gone from 2,180lbs capacity per tire to 2,755 per tire. I did have to buy new 15X6" wheels as the 15X5" stock wheels were to narrow for a 9.50" cross section tire.
Why did I go with LT tires? I personally don't like ST trailer tires and don't buy into the hype. I spent 15 years in the tire industry and back then all trailer tires were LT regardless of trailer type. I rarely saw issues other than an occasional defective tire, tire misuse or due to trailer problems. Now with ST tires there are constant failures and a good percentage cannot be explained other than garbage tires.
Mine came with Goodyear Endurance and I lost two within 30 days for no reason. I have 5K on these tires now and there's no wear on them at all, they ride 100% smoother than the ST, and the trailer feels solid behind the truck and the tread depth over double of an ST tire. I'm not advocating anyone else do this, just what I do.