Hey there, I'm putting the alcantara one on my '08 tomorrow. Dealer quoted me about an hour to do it, so for that piece of mind, I'm paying for it. I think if you go to the Bimmian site and look at their carbon wheel, there's a video showing how to do it. Looks like you just need some small screwdriver to depress the springs holding the airbag unit in place, and then probably a large socket to remove the actual wheel.