I am trying to finalize my Model S configuration and have a few questions: 1) I am really interested in getting the grey exterior with the grey interior. Anyone have pics of this configuration? I've gone through the forum and can't find much information. Having pictures of a performance version of the grey interior with cream piping would be helpful as well. 2) I am considering getting the performance version but am concerned the 21 inch wheels get scratched very easily based on some forum threads. Are people with 21 inch wheels running into a lot of issues? Also what type of tire life should I expect with the 21s? 3) I was going to go with the air suspension but I have concerns about reliability / maintenance of the system long term. Anyone have any good insight on the air suspension and reliability?