Roll stiffness

Rolls stiffness is a measurement of a vehicle's resistance to chassis roll. Total roll stiffness for an axle is calculated by adding up the roll stiffness of all elastic suspension components. On a typical vehicle, that may include the springs and the anti-roll bars. However, as of 2025, we do not use anti-bars, so our total roll stiffness is equivalent to our spring roll stiffness.

Spring Roll Stiffness

Spring roll? Yum! Spring roll stiffness is determined using the following:

$k_{\theta }{}_c{}_s=1/2\times k\times M{R}^2\times t^2$

• k_{theta cs} is the contribution to overall roll stiffness by the corner springs
• k is the linear spring stiffness
• MR is the motion ratio
• t is the tract width of the axle