What alignment angle describes the inward or outward rolling direction of the tires?

The correct answer is the angle that describes the inward or outward rolling direction of the tires is camber. Camber refers to the vertical tilt of the wheels in relation to the road surface when viewed from the front of the vehicle. A positive camber means the top of the wheels tilts outward from the vehicle, while a negative camber means they tilt inward. Proper camber adjustment is crucial for optimal tire wear, handling, and stability.

In this context, toe refers to the angle that measures how much the tires point inward or outward when viewed from above, rather than the vertical rolling direction of the tires. Caster refers to the angle of the steering axis in relation to vertical, which affects steering stability and returnability. Thrust describes the alignment of the rear axle relative to the vehicle's centerline, impacting how the vehicle tracks straight. Understanding these angles is essential for diagnosing alignment issues in a vehicle.