I run 30 x 9 Hoosier radial slicks on my 63 Sport Fury on my 8" wheels and have also run them on 7" wheels. It runs and hooks the same on either wheel as with the 8" wheels the tires rub up inside the 1/4 panel on the street when hitting bumbs as thats why I ran the 7" since they set the tire in a little more and it fits better in the stock wheelwell. I know most say run a 9" wheel on a 9" tire but these have worked fine for me. Ron