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If you keep the 6" lift, trim the fenders a bit you can run 37's and there is a guy on pirate4x4 that is selling humvee take offs (90% tread left) that are 37x16.5 for $65 a tire plus shipping. That is what I am going to run on mine for a while. Gonna get 10 tires and do a 5 tire rotation with a full size spare. Can't beat $650 for 10 tires.