I have 37x13.5 ATZ's on my truck. I got them cheap a few years ago($500). They had about 1500 miles on them but were removed because they rubbed to badly. I have about 45,000 on them now and they still have a few miles in them. I am putting new 38's on now though. I bet there is still 10,000+ miles in them but My truck seems to sit more then drive so some new rubber would look better for when it sits there. They have lived through a set of bad ball joints and a wheel bearing and would have lasted a bit longer if I would have fixed the front end earlier. I would buy them again but I only buy stuff that I get a good deal on and I am gonna Give Kumhos a try this time.
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