Which alignment issue could result from high rear ride height?

The alignment issue associated with high rear ride height primarily involves negative caster. When a vehicle's rear height is elevated, it can affect the suspension geometry. This alteration may cause the front suspension angles to change negatively, resulting in excessive negative caster. Negative caster occurs when the steering axis leans towards the rear of the vehicle, which can lead to a variety of handling issues such as reduced directional stability and increased steering effort.

In contrast, excessive camber and excessive toe changes are more directly influenced by adjustments to the suspension components or wear and tear rather than just ride height alone. Positive caster is typically preferred for stability and accurate steering response; thus, high rear ride height would not normally result in positive caster changes. Understanding how ride height impacts caster can help in diagnosing steering and handling problems effectively.