I have a 38' Jayco fifth-wheel. I had a lot of problems with tire failures. I went to Goodyear G614RST LT 235/85R16 tires. These tires have a max rating of 110 PSI. This required buying new wheels for...
I bought a new Holiday rambler in 2005. It had aluminum rims and in a short time they were recalled and replaced due to splitting inside the rim and loosing air. These rims were made in China and I don't remember the brand but yours could have been recalled also and you just didn't get the word. Now 11 years later there probably isn't much you can do but replace them.