When should you check the tire pressure of your vehicle?

Checking the tire pressure when the tires are cold is essential for obtaining an accurate reading. Tire pressure can increase as tires heat up due to driving, which can lead to a false measurement if checked while warm. When tires have been driven on, the friction generates heat, expanding the air inside them and causing the pressure to rise. Consequently, checking tire pressure after driving can result in readings that suggest the tires are adequately inflated even when they may not be.

Regularly checking tire pressure when the tires are cold, typically before driving when the car has been parked for several hours or overnight, ensures that you are measuring the pressure under standard conditions. This practice can help identify if the tires are under-inflated or over-inflated, which is critical for safe driving, optimal fuel efficiency, and tire longevity. Regular maintenance is also important, but it should not be the sole time you check tire pressure; routine checks in various conditions are beneficial for vehicle safety and performance.