What does 'Lock to Lock' refer to in steering inspection?

'Lock to Lock' refers specifically to the action of turning the front wheels of a vehicle all the way from one side to the other. This inspection is crucial in assessing the responsiveness and condition of the steering system. When performing a 'lock to lock' check, the inspector observes how easily and smoothly the steering wheel can turn through its full range of motion. This movement helps identify any issues such as binding, excessive play, or difficulty in steering, which may indicate underlying problems in the steering mechanism, including worn components or inadequate lubrication.

In contrast, simply checking for smoothness while driving does not provide a comprehensive understanding of the steering system's condition. Measuring the distance between the tires is related to wheel alignment rather than the steering mechanism directly. Aligning the wheels with the steering column focuses on ensuring that the wheels are positioned correctly relative to the car's overall direction, which is not what is meant by 'lock to lock.' Thus, understanding the definition of 'lock to lock' and its purpose in steering inspection is essential for ensuring proper vehicle handling and safety.