How about some profile shots with 17s in the front and 18s out back? I'm curious to see if it would't look a little weird with a larger wheel in the back due to the smaller back rotor. The front is nicely filled by the rotors (especially with 13 inchers) with the 17s, but then the smaller stock rear rotors with 18s....I don't know. Ever see those riced out civics with huge wheels and dinky rotors/drums in the back?
I have 18x9s at all 4 corners, but two of them are chewed up from the curb so I was thinking of replacing them with 17s, but I'm not sure on the look. Anyone?
Just as a note, I am pretty sure that cars that have larger rims in the rear also have an overall larger diameter with the tires mounted. That is the front might be 26" and the rears maybe 27". They step up a size in the rear rim to give the front and back tires the same side wall height for both performance and looks. However, the larger overall diameter of the rear wheels helps with traction. The problem with a mustang is that the ABS is setup to have the same front and rear diameters. Guys that run 28" tires in the rear at the track have the ABS light come on. A 27" tall tire might not trigger it, but I do not know for sure. The car still drives fine with the ABS light on from what I know.