If your car is a 2003 or 2004 Mach one in blue (like your avatar suggests), then ponder putting black bullets like these:
Stable - Imgur
(the mach 1 is the orange car on the right, obviously).
That was mine -- it looked terrific with those wheels. Black bullet offset 18" rims with polished lips -- 10" in back and 9" in front. It really looks right on the Mach 1 due to the black striping / accents all over the car.