15x7 with a 4.25” backspace up front with up to a 225/60/15 for the tire. If you use less backspace then that you’ll have to knock it off the tire width.
15x7 4.25” or 15x8” with a 4.5” backspace in the back. 255/60/15 can go on either one and should have room. With the 15x8” a 275/60/15 will fit most Dusters/Demons/Dart Sports but some cars are tighter than others and ride height, rear sway bar, and spring choice can make a difference for the 275’s.
And as a final disclaimer the body tolerances on these cars are pretty loose, so, it’s always best to measure your own car to confirm.
