Relatively easy to install if you do a google search and browse related forums. Quality construction and simple but effective results. Added camber by -0.7. Fits my street car perfectly and doesn't make it too ridiculous (it probably has -2.0 camber on each side now) for street driving. It should be noted that while they are a Dinan product notoriously expensive compared to a racing camber set ($400-$800) they are perfectly economical. They also do not create any additional noise, which is very important for a car that you drive regularly in everyday life and not only on the track. So if you are building a custom 1 or 3 series tracked vehicle, you should probably choose the right set of adjustable camber plates so you can get higher negative camber. For the rest of us, there's this elegant and darn simple solution.