What is the best time to check tire pressure for accuracy?

Checking tire pressure when the tires are cold is crucial for obtaining an accurate measurement. Tire pressure can increase with heat generated from driving; therefore, measuring tire pressure immediately after driving or when the tires are warm can give a falsely high reading. This can lead drivers to underestimate the actual pressure in their tires when they are cold and at the recommended inflation level.

When the tires have not been driven for several hours, they are in a state closest to the manufacturer’s specified pressure. This is especially important to ensure the best performance, fuel efficiency, and safety of the vehicle. It's recommended to check tire pressure in the morning before driving or after the vehicle has been parked for a significant period to get the most precise measurement.