For a vehicle to track straight, the thrust angle should be what?

For a vehicle to track straight, the thrust angle should be zero. The thrust angle is the angle formed between the vehicle's centerline and the rear axle's centerline. When the thrust angle is zero, it means that the rear axle is aligned with the centerline of the vehicle, allowing the wheels to move in parallel as the vehicle travels down the road.

A zero thrust angle ensures that the vehicle's chassis is aligned properly, which helps in maintaining straight-line stability. If the thrust angle deviates from zero, it can lead to conditions where the vehicle drifts to one side or the other, making it difficult for the driver to maintain control. This misalignment often indicates problems in the rear suspension or issues with the alignment itself. Keeping the thrust angle at zero is crucial for optimal performance and safety of the vehicle, as it allows for even tire wear and better handling characteristics.