Tennessee Permit Practice Test

Question: 1 / 400

What is the purpose of tire tread depth?

Improves vehicle appearance

Enhances braking performance

The purpose of tire tread depth is primarily to enhance braking performance. Adequate tire tread depth is crucial for maintaining good traction between the tires and the road surface, which directly affects a vehicle's ability to stop effectively during various driving conditions, especially on wet or slippery surfaces. The grooves and patterns in the tread help channel water away, reducing the risk of hydroplaning and ensuring that the tires can grip the road when it matters most.

While other factors such as vehicle appearance, fuel efficiency, and tire longevity are also important, they do not directly influence the tire's most critical function of safety and control during braking. Sufficient tread depth ensures that the tires can perform reliably in emergencies, making it vital for safe driving.

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Provides better fuel efficiency

Increases tire longevity

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