I have Steeda Wheels 20x11 on rear of my ?12 with 315 Nitto G2?s and I?m lowered 1.5?. The offset and backspacing need to be considered when trying to fit the tire inside the fender. Not to mention suspension travel. I tried a set of drag shocks/springs but a good bump and they rubbed. Back to the Roush/Dub/EIback springs with Strange adj shocks and no issues.
'12GT Premium, Roush TVS & BAP, VMP Elbow, 82mm, JLT CAI & Catch Can, Eiback Sports, Steeda Cambers & Adj UCA, Adj panhard & Brace, LCAs+Relos, Diff Bushing, Ford Diff Cover, Axle Catch Can, 3.73, Shaftmasters DS, MGW, BG Syncro II, Blowfish Shifter Support Bracket, Trans Mount Insert, MBRP 3" H pipe, Borla 3" Touring Pipes/Axlebacks, High Flow GT Grill Insert, Steeda Spyder Wheels (20X9.5/11), 275 fronts, 315 rears, Lakewood drag shocks, Cervini Hood, big smile