Just a note, i have 34x12.50 trxus tires on my rig and i have experienced no rub in the back at all. I have rubbing up front on the lip of the fender that has since been cut off with the old cutoff wheel. I think my ten inch wide wheels make the shoulder of the tire more square and squat so it doesnt rub. I have around 3 inches of lift in the suspension and one inch of body lift fyi. I think if youre gonna run a 12.50 tire you should run the widest rim you can, you want the most footprint possible.