The MacPherson strut is a type of car suspension system
widely used in modern vehicles, named after Earl S. MacPherson who developed the design.
Though named for him, it was actually invented by an engineer named Fornaca at FIAT
It can be used for both front and rear suspensions,
but is usually found at the front, where it provides a steering pivot (kingpin) as
well as a suspension mounting for the wheel. Rear struts of a similar design are properly called Chapman struts.
It consists of a wishbone or a substantial compression link
stabilized by a secondary link which provides a bottom mounting
point for the hub or axle of the wheel.
This lower arm system provides both lateral and longitudinal location of the wheel.
The strut setup is used on high performance cars such as the Porsche 911, all BMWs
