What should be done if a tire is warm?

When a tire is warm, the best practice is to check the pressure once it cools down. This is because tires heat up during driving, and the temperature increase causes the air inside to expand, leading to a higher pressure reading than would be measured at a lower temperature. Checking the pressure while the tire is warm can provide an inaccurate reading, which might lead to improper adjustments.

Waiting for the tire to cool allows for a more accurate assessment of the tire's true pressure, ensuring that it is within the manufacturer's recommended range. Keeping tire pressure within this range is crucial for optimal vehicle performance, fuel efficiency, and safety.

In situations where tires are warm, adjusting the pressure immediately could risk overinflation as the tires cool down, leading to potential handling issues. Therefore, giving the tires time to cool before checking the pressure is the safest and most reliable approach.