If I remember correctly, the rims were hitting the calipers as the lug nuts were tightened down. Some people suggested I could grind the calipers a bit for the needed clearance, or to use spacers to push the wheels outboard a little further.
I chose to keep my 14" X 5 1/2" sbp Rallyes up front. I then bought a pair of used WheelVintiques 15" X 7" sbp Rallyes (from FABO member 72Dart6pack) to be used out back.