alright, time to buy new wheels and i need to spread things out a little bit so i'm adjusting my backspacing. here's what i need to know: is back spacing measured from the centerline of the wheel to the mounting surface? for example: if i have a 15x8 wheel with 3" backspacing will a 15x10 wheel with 4" backspacing give me the same width across the axle from the outside of the driver's side tire to the outside of the passenger side tire (tires will be 12.50 width -- if it matters)? thanks for the help.
-gareth
-gareth