What is the consequence of letting air out of hot tires?

Letting air out of hot tires will result in lower pressure once the tires cool down. This is because air expands when heated and contracts as the temperature decreases. When you release air from hot tires, you are not taking into account the expansion caused by the temperature increase. As the tires cool after driving, the air inside will contract, leading to a tire pressure that can be significantly lower than the recommended level, which can affect vehicle handling, fuel efficiency, and tire wear.

Maintaining the correct tire pressure is crucial for safe vehicle operation. Under-inflated tires can lead to poor performance, reduced fuel efficiency, and increased risk of tire blowouts. Therefore, the practice of letting air out of hot tires can lead to unintended consequences that compromise both safety and performance.