In a vehicle alignment setting, what does the term "thrust angle" refer to?

In a vehicle alignment setting, "thrust angle" refers to the overall vehicle symmetry, specifically in relation to the direction in which the rear wheels are pointing compared to the front wheels. It is a crucial measurement because it indicates whether the vehicle's rear wheels are aligned with the front wheels. This alignment affects how the vehicle tracks straight down the road; if the thrust angle is out of specification, the vehicle may pull to one side or exhibit uneven tire wear.

A correct thrust angle measurement supports proper handling, tire wear, and overall vehicle stability. If the thrust angle differs significantly from zero, it suggests that the rear axle is not parallel to the front wheels, which can lead to various handling issues. This makes understanding thrust angle vital for ensuring the vehicle operates as intended, promoting safety and performance.