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Manuel289:

You may want to do a bit of research before you just spray your wheels with some enamel. Magnesium is very prone to corrosion if exposed (and then cracking as a result), to age hardening and building up stress from flex energy (again, to the point where it can begin cracking), and to leaking air if not sealed properly. It needs to have contaminants baked out or you will get outgassing during painting, it needs to be stress relieved (annealed), it should be dye (Zyglow) tested for cracks, and it needs to be powder coated to be sealed properly because the zinc chromate originally used by the factory is a carcinogen and, therefore, no longer available (or you could try to find another sealer like Dow-12 or Alodine). Then you need to go to a tire shop that will not butcher the finish while mounting your tires, and that can balance your wheels using glue-on weights that will not scratch through the finish like clip-ons will.

If you have to do any repairs, and especially if you are dealing with crack repairs or damage requiring welding, you had better make sure you give the wheels to someone who knows what they are doing with magnesium. I called close to ten different wheel refinishing specialty shops before I found one who didn’t lie to me about having experience with magnesium. Most didn’t even know that magnesium is flammable! Give your wheels to idiots like that, and they will burn down their shop and your wheels along with it.

Even one of our longest established and best known vendors, who claims to have refinished thousands of wheels, has been doing it wrong all these years. He has been baking them at temperatures so high that it caused the aviation wheel repair specialist who Zyglow tested my wheels to groan when I told him about it!

Mike Drew and Jack DeRyke have both written excellent articles on this rather complicated subject, so I would urge you to either look up the articles or ask them for advice. In the alternative, warm up your credit card, send your wheels to Larry Stock, and let him test and refinish them the right way. If just pressure washing them peeled off your wheels’ finish, they will need it!
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