The Roll Center is the imaginary point about which the sprung mass of a vehicle rolls during cornering at a given axle. Its location is determined by the suspension geometry — specifically the angles of the control arms or strut. The relationship between the roll center and the vehicle’s center of gravity controls how lateral force is transferred between the chassis and the tires, and how much body roll occurs for a given cornering force. Roll center management is a fundamental tuning variable in performance suspension design.