Florida CDL General Knowledge Practice Test

Letting air out of hot tires to normalize pressure is not advisable and can cause damage. When tires heat up during driving, they expand, and their pressure increases. This is a normal phenomenon due to the increase in temperature affecting the air inside the tire. Reducing the pressure when the tires are hot does not address the issue of proper inflation once the tires cool down and can lead to under-inflation. Under-inflated tires can lead to uneven tire wear, increased heat buildup, and potentially tire blowouts, which pose serious safety risks. Maintaining proper tire pressure is crucial for optimal performance, safety, and fuel efficiency. After tires have cooled, checking and adjusting tire pressure to the manufacturer's recommended levels is the correct approach. This ensures that the tires are adequately inflated when operating temperatures are stable, thus enhancing vehicle control and safety.