When the steering axis is tilted forward over suspension, what is this condition called?

When the steering axis is tilted forward over the suspension, this condition is referred to as negative caster. Caster angle is the angle formed by the steering axis in relation to the vertical axis. In a scenario where the steering axis leans forward, there is a reduction in the positive caster angle, resulting in a negative caster condition.

This particular alignment setup can influence the handling characteristics of the vehicle, often leading to a feeling that the steering is lighter and less stable compared to a configuration with positive caster. Positive caster is associated with a backward tilt of the steering axis, enhancing stability and straight-line tracking. Negative camber and positive camber pertain to the tilt of the wheels themselves rather than the steering axis, and thus do not appropriately describe the situation involving the steering axis tilt. Understanding these terms is crucial for properly diagnosing suspension alignment and handling issues.