Powder Coating

I would advise against powder coating wheels. The problem is if you get chips or a scratch, the only way to fix it is to strip the wheel and re-powdercoat it. With paint, you can touch it up. Just my $.02

I had a set of summer wheels refinished in Black Chrome which is powder coat then PVD coat of black chrome for my Cadillac. When the dealership service guy rotated my wheels (without my knowledge), he used an impact to remove lugs and chipped the holy hell out of each lug pocket. The only fix was to strip and recoat all the wheels.