What is the roll center and how does its height affect vehicle dynamics?

The roll center is the instantaneous point about which the sprung mass rolls during cornering, determined by suspension geometry. A higher roll center reduces body roll but increases jacking forces and can cause unpredictable handling. A lower roll center increases roll but provides smoother weight transfer. The roll axis connects front and rear roll centers, and its relationship to the center of gravity determines roll couple distribution and handling balance.