Originally Posted by
D R U
Dont quote me on this, but i think its a result of the multi link suspension.
When the car is lowered the suspension geometry changes and the top of the wheel is pulled in (or bottom pushed out), to try and keep the equilibrium in the suspension (hence negative camber).
The rear camber kit allows you to control the how far the top (or bottom) of the wheel is pulled in (or pushed out), hence controlling the camber.
Thats how i understand it anyway, correct me if im wrong.