What is the purpose of torsion bars in some suspension systems?

The purpose of torsion bars in some suspension systems is to provide adjustable stiffness and help support the vehicle's weight. Torsion bars work by resisting twisting forces; as they twist, they store energy, which can be adjusted to manage the vehicle's body roll and suspension stiffness. This capability allows manufacturers to tune the suspension for different applications, whether for comfort in regular driving or for performance in sportier scenarios. Additionally, because torsion bars are anchored at one end and allow for adjustments at the other, they provide an efficient means of modifying the suspension characteristics without the need for additional components or drastic changes to the suspension setup. This flexibility in tuning allows for enhancements in handling, ride quality, and overall vehicle dynamics.