I basically have the same lift as you do and same size tires but I have an aftermarket bumper and no air dam. No rubbing anywhere. The gents above know their stuff. I have the same backspacing on my wheels too.
2013 2 door Commando Green Sport, 2.5 Teraflex lift, Rancho 9000XL shocks, Teraflex Monster Track Bar, Teraflex Exhaust Spacers, Rancho Drop brackets, Northridge bolt kit, JKS Quicker Discos, 315-70R-17 Duratracs on Level 8 Strike 5's. ACE rock sliders, Rugged Ridge XHD front bumper w/storage ends and RR synthetic line winch.