Which tool should be used to check tire pressure?

Which tool should be used to check tire pressure?

• A. A ruler
• B. A tire gauge
• C. A pressure gauge
• D. A thermometer

Answer: (C)

Measuring tire pressure requires a device that reads pressure. A pressure gauge is designed to do exactly that—attach it to the tire’s valve stem, seal it, and read the pressure shown (in psi or kPa). Keeping tires at the recommended pressure helps with safe handling, even wear, and better fuel efficiency. A tire gauge is a common form of pressure gauge used for tires, but the essential function is reading pressure, which is why this tool is the correct choice. Rulers measure length and thermometers measure temperature, so they don’t provide the tire’s air pressure.

Measuring tire pressure requires a device that reads pressure. A pressure gauge is designed to do exactly that—attach it to the tire’s valve stem, seal it, and read the pressure shown (in psi or kPa). Keeping tires at the recommended pressure helps with safe handling, even wear, and better fuel efficiency. A tire gauge is a common form of pressure gauge used for tires, but the essential function is reading pressure, which is why this tool is the correct choice. Rulers measure length and thermometers measure temperature, so they don’t provide the tire’s air pressure.