To check tire pressure, consult a user's manual to identify the recommended level, remove the cap from the tire, place an accurate tire pressure gauge over the tire, and note the results. Check the pressure when tires are cold for the most accurate reading, as advised by Michelin.
Typical handheld tire gauges have a pressure meter that pops out when the pressure is right. It is best to avoid using automated air pressure machines at gas stations, as their readings are often inaccurate, according to NTB Tire & Service Centers. When necessary, add or remove pressure and then recheck the reading.