ThirdMan
Gold Member
We just bought a used two horse strait in (title says 1974) with two axles. This is my first trailer, but my wife has hauled horses in the past. The previous owner has replaced the floor, lights, sanded and painted it. They got a third horse and needed to upgrade. The tires need to be replaced as the sidewalls are showing cracking and the spare is blown out. The current tires are P215/75R15. Reading around I should be putting ST tires on it, but I am not sure which size (as 215/75R15 is not a a standard size in ST). Should I be putting on ST225/75R/15? I was thinking of just heading over to a tire place or Walmart and buying a set at $50 a tire for them to put on.