This all depends on the wheels believe it or not. I have a 03 and the wheels say only 80 pis. newer RV's have wheels with 110 stamped on the inside. You need to check that out. Lots of guys here like Sullen (sp) They run at the 110 PSI and I cant use them. There is a date code on the sidewall that tells you when they were made. Here is how to find out how old
https://www.tirebuyer.com/education/...-of-your-tires