lightfire, the wheel ratings are either stamped on steel wheels or forged into alloy wheels on the back side of the wheel. The pressure ratings should coincide with the load range/max psi of the tire on the wheel. Sometimes the wheel rating exceeds the tire rating that comes with the trailer. In that instance you can put heavier load range tires on the trailer. Just remember to never exceed the wheel ratings. I cant answer your question regarding wheel fitments because I don't know the lug size pattern on the trailers. Generally if it's a 5 lug pattern on a trailer wheel, they are all the same. As long as you keep the tire diameter very close, you should be fine.