Standard BMW suspension is a very diverse item that has been designed to work in multiple environments, on many different types of terrain, weather and surfaces. If you are using your BWW mainly for fast road use, track days or racing then you will certainly benefit from upgrading to a good set of coilovers.
Installing the coilovers will provide damping adjustment, allowing you to fine tune the handling characteristics of the car and will also provide a stiffer spring rate to control the car when being pushed to its limits through the corners. With a sophisticated coilover, the stiffer spring doesn’t mean you will have a much harsher ride than stock too as the spring rates are carefully designed around your use of the car.
One area that can be drastically improved on BMWs is the lack of camber adjustment for the front wheels. Particularly once coilovers or lowering springs have been installed, the lower, stiffer car will be trying to use more of the camber of the tyre through corners. Without the correct camber setting, you will have less grip from the tyre than before. With the installation of a camber plate you are able to increase negative camber and fine tune the settings to ensure you are getting the maximum grip possible, and more even wear from your tyres.
Adjustable Suspension Arms
When lowering your E92 M3, adjustable suspension arms and drop links are an important component to install to set the best geometry possible for the car. Once lowered, the standard adjustment bolts do not have enough range to set the optimum settings for camber and toe and therefore require adjustable arms with enough range to achieve all settings. Drop links are also required when lowering the E92 M3 to set the anti roll bar back to the standard positioning to prevent any contact between suspension components. They are also required when corner weighting to remove any tension from the roll bar when in resting position.