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...
Were those tires and wheels all from 2005? If so you were probably 5 years over due for new tires. Now, what exactly is the weight on the axles? If your that heavy, maybe you should consider 17.5 inch tires and wheels.