Lowering a vehicle will often take it out of OEM alignment specification.
A large majority of OEM suspension components do not have any camber adjustment.
An out of spec alignment can cause poor handling characteristics and even premature uneven tire wear.
This Toe Arm Cambers Kit Designed for BMW E90, E92 , and the E93, this kit will help your lowered car not only drive better, but your tires will last much longer as well.