I am looking to change my stock tires to 31 BFG A/Ts. Which tire size should I do with the A/Ts to have a 31 (265-70-16 or 275-70-16)? I dont know anything about tire sizing, so I appreciate the help. I understand 255-70-16 is a 30 inch, what is the size for a 31 that will fit on my Ex? Can I even fit 31s without lift?