Maine CDL Practice Test

Question: 1 / 400

Why is it inadvisable to let air out of hot tires?

The air pressure will be too low when the tires cool off.

Letting air out of hot tires is inadvisable primarily because the air pressure will decrease significantly when the tires cool down. Tires heat up during driving, which causes the air inside to expand, leading to a higher pressure reading when checked. If you release some air while the tires are hot, the pressure may drop below the recommended level once the tires cool. This under-inflation can affect tire performance, fuel efficiency, and safety on the road, making it crucial to ensure that tire pressures are measured when the tires are cold for accurate assessments. Maintaining proper tire pressure is essential for optimal vehicle handling and preventing issues such as reduced grip or increased tire wear.

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It can lead to tire blowouts.

It may cause uneven tire wear.

It can change the vehicle’s handling characteristics.

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