Fifth Wheel Rim width and psi rating

If you have 8 lug I have 4 i can sell you if yours don't work out.I was blowing tires and went to 19.5s

Jackthe trailer up, take a wheel off and look. It should be stamped on the inside of the rim. Being 6 years old no one is going to be able to tell you for sure otherwise

If you mean you own a 2008 Cameo, then I don't understand.