Uh oh. I just read the following in the Tesla forum:
I'll chime in with the counter to this recommendation to powder coat the wheels: do NOT powder coat the factory wheels. There are several reasons: it adds more weight than you realize (especially considering it's unsprung weight), it can add imbalances, and it can even compromise the integrity of the wheel itself. This depends on the process used and the individual performing the process... who will all tell you they're experts as you shop for the cheapest one.
As someone who was young once and thought powder-coated wheels were the coolest... I quickly discovered through various ongoing problems that it's just not worth it. Especially on a 5,000lb car w/over 1k horsepower that introduces some physics to a wheel the automotive industry doesn't regularly see. It seems like a cheap alternative to buying better wheels or simply having wheels similar to everyone else. Still, the reality is that it could also introduce a lot of variables and stressors that one isn't expecting.