I know that I can run 15" Steel wheels on a D60 Front with some grinding on the calipers, but need to know how much backspacing I can / should run. I plan on running 44" Boggers on a 10" beadlocked wheel. (6" susp lift) Can I run 3 3/4" inches of backspacing on a D60 without the wheel / tire sidewall hitting anything? What about the tires as full lock? Will they hit the frame? I know Stephen Watson (ORD) is running 42's on 10" wheels with 3" of backspacing. I don't know if he is running this particular backspacing to clear components, the frame, or he just prefers that particluar spacing. Any help would be appreciated.