* Bolt Pattern: This is the number of lug nuts and the diameter of the circle they form. (e.g., 5x115mm) This is the most crucial factor. If the bolt patterns don't match, the wheels won't fit.
* Wheel Offset: This is the distance between the mounting surface of the wheel and the centerline of the wheel. Incorrect offset can cause rubbing against the suspension, brakes, or bodywork.
* Wheel Diameter and Width: While the bolt pattern matches, the wheel diameter might be too large or small for the Charger's calipers or fenders. Similarly, the wheel width may be too wide or narrow.
* Center Bore: This is the hole in the center of the wheel that fits over the hub. A mismatch here will prevent the wheel from fitting properly.
In short: Don't assume they'll fit. You MUST verify the specifications of the Magnum wheels and compare them to the specifications for your Charger's wheels using a reliable source like a wheel and tire specification chart or your vehicle's owner's manual.