Well after doing a little bit of research on our cars, the information that I came out with is that as long as you don't lower your car lower than two inches, then camber kits would not be necessary. I went to my local shop and they checked the alignment on my wheels. They said that I would need the kits because my camber was off to much. The rear was -1.5 and -0.9 and the front was -0.5 and -0.9. These kits cost me 160 for the front and 140 for the rear plus 200 for the installation and another 50 for the alignment. I guess the point of all this unecessary jiberish is that you ought to consider this fact, before you decide on lowering your car. But I dont think it will take too long before price is overcome by the beautiful looks of my newly lowered cls. Also, I would have installed this myself but I don't have the time between now and sunday before I hit the road again.