I have a 27' 5th wheel. Over the years I have had (5) blowouts. I have 15", E rated tires from Les Schwabb for trailers. I have two 5200 # axles with the 5th wheel being rated at GVWR of 12,000 #. A f...
My last set of STs lasted 4 years, almost to the day, and they were only on the ground (I store it raised up) for 1 month worth of camping trips. They seem to have a time limit regardless of any other conditions... at least in this desert. I have 6 lug hubs so I went to 16" LTs. No problem since. Craig