Technically, Chrysler never called the wheels "Magnum 500's". That's a Ford term. Chrysler called them "Road Wheels". All Road Wheels were 14". Ford did offer a Magnum 500 in 15" and those had a chrome hoop. Road Wheels had a black painted hoop and a matte chrome center. My original Road Wheels are not rusty at all. Maybe some repro wheels have thin chrome and rust?