Utah CDL General Knowledge Practice Test

Maintaining proper tire pressure is crucial for multiple reasons, primarily related to safety, fuel efficiency, and longevity of the tires. When tires are inflated to their recommended pressure, they provide better contact with the road surface, leading to improved handling and stability. This reduces the likelihood of tire blowouts or accidents caused by poor traction.

Fuel efficiency is also significantly affected by tire pressure. Under-inflated tires create more rolling resistance, which means the engine has to work harder to move the vehicle, resulting in increased fuel consumption. Conversely, properly inflated tires reduce this resistance, leading to better mileage and lower fuel costs.

In terms of tire longevity, proper inflation prevents uneven wear, increasing the lifespan of the tires. When tires are either over or under-inflated, they can wear out more quickly and unevenly, necessitating more frequent replacements and contributing to higher costs over time.

While the other options touch on aspects related to vehicle performance or maintenance, they do not encompass the comprehensive benefits of maintaining proper tire pressure that directly impact safety, efficiency, and the lifespan of the tires.