One thing to be careful of with powder coating wheels. There are temperature limits for powder coating - usually in the 300F-400F range at which it can break down, melt, etc. Cars that use their brakes hard can put that much temp. into the wheels right around the hub/lug nut area. I found out the hard way while on the track as suddenly my lug nuts were loose because the powder coating under them melted. So, if you're gonna use the car hard, I'd have the powder coating company mask the area where the lug nut touches the wheel to keep it bare. You'll never see it when the lugs/wheels are on the car. But it'll remove a possible problem area if you really use the car/brakes. Probably won't be an issue on a car that doesn't see the track.