What is the proper way to check tire pressure?

Checking tire pressure when tires are cold is essential for obtaining an accurate reading. Tire pressure tends to increase as the tires heat up from driving, which can lead to inflated readings if checked immediately after driving. Cold tire pressure measurements reflect the tire’s true condition, allowing you to make necessary adjustments to ensure optimal performance, safety, and fuel efficiency.

Relying on measurements taken when the tires are warm can result in under-inflation, which may cause poor handling, reduced fuel efficiency, and increased tire wear. This is why it’s emphasized that tires should be checked when they are cold, ideally before the vehicle has been driven for more than a mile or two.

While checking tire pressure monthly is a good maintenance practice, it doesn't account for the accuracy of the reading under warm conditions, nor does it guarantee timely insights into tire condition. Conducting checks only during inspections might miss critical safety concerns that arise between inspections. Relying solely on a tire warning light is also not advisable, as this can fail to alert you to gradual tire pressure loss that may not trigger the light until it’s critically low. Thus, checking cold tire pressure is the most reliable method for maintaining healthy tires.