4 piston caliper swap
 

hey i have a base s4, i was wondering what all would i need to do the 4 piston caliper swap into my fronts...i would probably just buy steel braided lines when i installed but i was wondering do i need different rotors at all, do i need the lines off a turbo2 or gxl etc, and what is the minimum size tire i would need for the calipers to clear?? i have 16x7 riken mesh with +17 offset on my car right now..would thoise be ok??