Just got back from the Costa Mesa SC. I was told all the same things: it's normal, try less regen. I think I've been had. How is it acceptable for a luxury car at this price point to have squeaky brakes!? Regardless of metallic content of the disk, or infrequency of use, or whatever else. My question is does every model S have this problem? It looks like the answer is no. So that would mean this is a defect that needs to be corrected.