Magnum 500 14"wheels with new tires

Those are not magnum 500’s. They have trim rings and the spokes are not chrome. They look like they are ford 14x7” wheels from the mid to late 70’s.

magnum 500’s have a chrome rim and spokes. Not trim rings on them.
They could be Road Wheels - painted
Spokes and trim rings

Here is a true 14 inch Magnum 500 on the back on my 65 Dart panel wagon with rear disc brakes to boot

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