I admit that I am fairly new to the Class A lifestyle so I am not an expert, we had a 5th wheel before, but I have put nearly 5000 miles on our coach. My 22.5 in tires specify max of 120 lbs, but I put 110 lbs in each tire since I feel very comfortable I am not too heavy. We travel with empty tanks except for a very little fresh water and I don't think we carry too much cargo. So unless you are a pack rat and carry tons of stuff, you could stay a little less than max pressure and probably be just fine.Our coach rides and drives just fine with the 110 lbs of pressure.