I'm running 15x8s and 15x10s. The fronts have a stock backspacing of 4.5" I think, and the rears have around 4.5" also. I probably should have went with 5" but I wanted more lip. I did have to gently roll the inner fender lip a bit to keep it from cutting the sidewall, but I cut nothing.





For reference, here is the 15x8s mounted on the back:



There is plenty of room in the wells.