What should you inspect in relation to the wheels during a pre-trip inspection?

During a pre-trip inspection, it is crucial to inspect the wheels for cracks or damage. This is important because cracks or any visible damage can compromise the integrity and safety of the wheel, which can lead to serious accidents while driving. A damaged wheel can fail under pressure, especially when the vehicle is in motion, potentially resulting in a loss of control.

While checking for air in the tires is important for ensuring proper inflation and safety, it is more specifically related to tire pressure rather than directly about the wheels themselves. Inspecting for signs of theft can be a safety concern, but it doesn't focus on the essential structural integrity of the wheels. Ensuring all wheels are the same size is important for vehicle handling, but again, it does not assess the condition of the wheels themselves.

Thus, inspecting for cracks or damage directly addresses the overall safety and functionality of the vehicle's wheels, making it the most relevant and critical action during a pre-trip inspection.