I offer a few options: a) dismount the tires if they are still good, and for the money that new steel wheels cost, get them and you are back on the road in no time. The old wheels have multiple purposes as "stands" or other weight items, before going to the scrap, which you might get some pennies as well. b) if you want to "restore", as mentioned above, and are concern about their condition, the best course of actions is to dismount the tires, bring the wheels to a good tire center and have them checked for distortion or unbalance, and eventually repair them. Then you go to sandblast them, and have them powdercoat with a proper treatment which will prevent rust and will last much longer. Obviously this is recommended only if the wheels are valuable enough to justify the hassle and expense. An alternative to powdercoating is paint, but then you need someone that will paint professionally and with desire, and I would add have him/her put a double layer of lacquer on top, to increase resistance to damaging action. c) if you have a looooot of time to waste, endulge yourself in hours of destroying your hands, fingers, and equipment in using a wire brush. Make sure you get good, thick gloves, you will need several wire brushes and avoid cheap ones from the bricolage as they literally disintegrate and fly off everywhere. In anycase, make you wear protective glasses, ALWAYS! Keep your eyes safe from harm, they are among the most expensive "items" in our body ... You are likely to wear and trash out a drill for this purpose, so keep this in mind. If you use a battery powered make breaks if you see battery gets too warm. After that, provided you manage to remove ALL the rust all around the rims, is time to use a proper ground/epoxy base and then paint. If you do it by brush, depending on your skills if will range from horryfing to acceptable. I think I was clear in illustrating how useless the entire process is. I have wasted many an hour and many a piece of equipment trying to save things undeserving to be saved. Hope these words are useful to others to avoid wasting time, money, and potentially hurting themselves. Last but not least, a wheel that has reached this condition denotes years of neglect. To avoid getting to this stage, it would be advisable to have wheels cleaned regularly, especially after the bad season. When in the initial corrosion phase, the simple application of a corrosion converter like Wurth/Fertan and others, can minimize the damaging action of rust, and then even a simple spray/brush application of a product like Hammerite can keep it at bay. When it arrives to this condition, is a much more involving "saving action", and most of the times, hopeless unless radically approached (sand/powder, for example).