What tool should drivers use to measure tire air pressure?

The use of a tire pressure gauge is essential for ensuring that tires are inflated to the proper pressure, which is crucial for vehicle safety and effectiveness. A tire pressure gauge is specifically designed to measure the air pressure inside tires, providing an accurate reading. Regularly checking tire pressure can help in maintaining optimal performance, improving fuel efficiency, and ensuring better handling and safety.

Other tools mentioned, like a pneumatic gauge or pressure pump, serve different purposes. A pneumatic gauge generally measures air pressure in various applications but is not specifically tailored for tire use. A pressure pump is used to inflate tires rather than measure their air pressure, and a measuring stick lacks the precision necessary for determining tire pressure. Thus, the tire pressure gauge is the appropriate and most effective tool for this task.