I am on my second set. I had Tacoma Lt tires {USA made} on mine and I just replaced them after 8 years when they just started to show a few cracks near the rim bead area. I watched them carefully and never had a single problem with them. I always kept them covered except for when we were camping. I had the stock white spoke rims on them and 2 of them would leak slowly so I had to keep a close eye on them. I always ran them at 80 P.S.I. I finally put aluminum rims on last year and my leaks went away.