I have finally save up enough dough for aftermarket wheels for my 05... Question is backspacing. I have a spacer lift and 285's. I am not worried about rubbing on the bottom fender or mudflap, as I can trim that. Just worried about rubbing against the caliper and A-Arms.

I have narrowed my search down to the AR Baja's and the MT Classic 2's. My brother is manager at a Merchants Tire, and the discount is awesome on these wheels. So, what backspacing do I need? Thanks.
-Sam

Mine are 4.5 but something in the 3 range will push the wheel out further and should eleviate any issues with rubbing the A-arms.