My first X5; Silver 4.4i with "is" wheels and chin spoiler. I sold it a couple of years ago and had regrets... so I bought this 4.6is! Since I have already had the "is" experience in terms of appearance, I am considering changing this one up a bit; Aero kit and different 20" BMW OEM wheels (still wanting to maintain a factory appearance).
The last photo is not my car; but its the look I am thinking of going for (except in black)
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Feel free to chime in!