Cardinals fans and soccer mom’s can breathe a sigh of relief. Car magnets will not harm your vehicle’s finish. But here’s a tip:  be sure to remove magnets before washing at 3 Minute Express Car Wash, then be sure your vehicle is dry before replacing the magnet. It’s best to occasionally relocate the magnet to a slightly different spot too, just to make sure the sun isn’t fading your paint around the magnet.