The widest rims you could get for the Ford 4 1/2 inch Bolt pattern (Same as your smaller Mopars) was maybe 5 1/2 or 6 inches. Since the older Imperials ran 9:50 X 15's their rims were closer to 8 inches wide but had a 5 1/2 inch bolt pattern like Older Fords c... Login to read more.