<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">A friend of mine recently told me that trailer tires go bad from sitting in the same position much of the time. Unlike car tires that are continually flexed, the trailer tires don't get that and this non activity accelerates their deterioration/failure. He said that ideally we should put the trailer up on blocks removing the load on the tires when it is not in use and I would get longer life from my tires. </div></BLOCKQUOTE>
I've heard that too but I don't jack mine up, I'm not sure if it's true. What I heard is that there is a molecular change in the tires compounds when they aren't flexed regularly. I've also heard that the steel belts will tend to deteriorate at the contact spot when sitting in storage with weight on them.
I think irregardless of what you do, whether it be lift the weight off, drive them frequently, put a cover over them, or to remove and store in them a dark place, your tires will still need replacement after 5 or 6 years. I replaced two on my now 5 year old HH last summer when I could feel a bump starting on the tread.
'11 GMC Acadia SLT AWD
'11 GMC Sierra 1500 4x4 Extended Cab