This is a good thread to read. We have a fifth wheel, purchased brand new in 2010. We knew we had to schedule new tires end of this year, at least by our first trip next year as DOT of tires was 2010. We just had a blowout. We take anywhere from 4 - 5 trips a year, mostly short distance with one longer. Other than that, the 5W sits most of the time. Based on this thread, the tire failure was about expected on these original "china bomb" tires. Seems that with the way ours sits, we would be wise to have them professionally checked going into the 3rd year of use, otherwise continue as we have with maintaining recommended PSI and visual checks.
