Roll center

Totter is the professional term for the rotational motion of a land vehicle to the longitudinal axis of the vehicle-fixed coordinate system. For ships and aircraft, this movement is called roll. Colloquially, the term is used, for example in the sense of " to move unsteadily ."

When cornering, for example, a vehicle tends usually due to the centrifugal force to the outside. The thereby adjusting the roll angle is dependent on lateral acceleration, vehicle mass, center of gravity height and chassis construction.

The roll center is the instantaneous center of the rolling motion of the body of a vehicle with respect to the vehicle coordinate system. Due to the kinematics of the wheel suspension, the position of the roll center of the roll axis and is affected by the forces acting on the vehicle. You should therefore always changing according to the changing load situations while driving.