Which tool is typically used to check tire pressure during a pre-trip inspection?

Using a tire pressure gauge is crucial for checking tire pressure during a pre-trip inspection. This tool provides an accurate measurement of the pressure inside a tire, which is essential for safe vehicle operation. Proper tire pressure optimizes fuel efficiency, ensures even tire wear, and enhances overall vehicle performance and safety.

A rag is not designed for this purpose and does not provide any measurement or feedback about tire pressure. A flashlight may help in inspecting the condition of the tires visually, but it cannot assess the pressure levels. A wrench, while useful for loosening or tightening tire lug nuts, is not a tool for measuring tire pressure. Therefore, the tire pressure gauge stands out as the appropriate tool needed for this specific task, ensuring that the driver can assess and maintain tire health effectively before setting out on the road.