Just had a set of BBS wheels powder coated by a company in Indy. Had several variations of black and went with a glossy black. Main thing is the cleaning, they chemically cleaned the wheels to prevent the wheels from warping. I was concerned what heat from track time would do until Saturday. I use the front FGT wheels on my Shelby for track days because they clear the bigger calipers. Ran 5 sessions at Road America Saturday and cooked the front pads, (could not run the last session**!!*#*!) wheels were too hot to touch and the powder coat had no damage. If you have to ship your wheels any way the place in Indianapolis did a great job and I can get you their information.
Can’t wait to get them on one of the GT’s to see how they look.