Is the only way to know to buy them and try them? Does anyone know if 8-9 wide will fit on my 84 fwd quantum? 14x9 not sure the offset saw them on Craigslist the guy doesn't know. He send pictures of the measurements from the inside lip to where it would meet the rotor/drum. The 9s were around 5" and the 8s around 3" thanks guys.