What is preload in the rear axle?

Preload in the rear axle refers to the initial tension applied to the suspension components, such as springs or shocks, before any load is applied. This adjustment helps maintain proper ride height, optimizes handling characteristics, and ensures that the suspension operates effectively under various driving conditions. Proper preload can prevent bottoming out and improve overall vehicle stability and performance. Adjusting preload is crucial for achieving the desired balance between comfort and control.