My setup is as follows.
15x8 steel rims with a 5" backspace.
275 60 r 15 mickey thompson street et tires
trimmed 1/8" of wheel lip
mopar offset spring kit
kyb shocks with 1" added to leaf springs (rearched)
The rear axle etc must be exactly centered to make this work. I have close to 1/2" on outer wheel lip and inner leaf spring clearance. As of yet I have had absolutely no rubbing.