I've got Hoosiers all around Radials up front and Quick Times on the back. The rep @ hoosier said I could get away with the bias/radial combo since the radials are so narrow?? 4.5" front to 22.5" rear. I don't plan to get much use out of these anyway. Eventualy I think I'll go radials all around for the street and then get a set of slicks & bead locks for the strip.