[230iZTR]

Originally Posted by Jamesjedi

There must be an ideal height that is ideal for suspension geometry.

In the words of Dr. Dave Coleman of Sport Compact Car Magazine (now global head of Mazda Speed): "Lower your car. Just don't lower it too much."

There's a balance to strike between a lower center of gravity and a higher roll moment between the center of gravity of thr car and the roll center where the lines extended from the control arms intersect. How low you are comfortable going should be proportional to how much stiffer you've made your springs and roll bars, and how much travel you've got. Bottoming out is bad, not making use of your full travel is also bad. Setting the ride height somewhere in between so the car does neither is ideal.