I've had great experiences with Signature Glass in Costa Mesa. It's not a bad drive from LA at all. They have a no questions asked guarantee. I had my Audi window smashed a month or so ago and went there to have the replacement re-tinted and they did it for free. While I was there I talked to them about the M3 tinting and I don't want to quote what they told me (because I forget the price) but it sounded reasonable. I plan to take mine there when I get it.
Signature Glass Tinting | Serving Costa Mesa, CA & Orange County
Extreme Autowerks. Cerritos. Accept no substitutes. Check em out on Yelp. Ask for Bing. They’ve done hundreds of Teslas.
.That photosync was quoted $$$ by extreme autoworks, but maybe that film is really that much better/more expensive.