I can get 4 lightly used 37x12.50R17 TSLs from my local tire shop for $800 mounted and balanced! The guy at the shop looked at my truck and with my dodge wheels he is thinking the 37.5s will fit. I run a 4 inch lift w/ Rancho(I think, maybe trail master?) springs in the front and blocks in the rear. I don't have much flex in the front end and was thinking of trimming the fenders a little anyways, as well as a 1 inch body lift eventually, and maybe some zero rates up front with a little taller block in the rear. At 200$ a tire mounted and balanced I think that I'm doing pretty good. I wasn't planning on running this much tire w/ 4.10 gears and a lo-po 350, but hey it's a pretty good deal! I only have '31s on it right now but there looks to be a lot of room under there. Would you guys go for it or should I stay safe and buy some '35s? I mean I'm all about having max wheel travel over max tire size, but 37.5s sure would look mean!!!!