What is the legal minimum tire tread depth?
Quick Answer
The legal minimum tire tread depth in most states is 2/32 of an inch. Insert a penny into the tread and if Lincoln head is fully visible you need new tires. Insufficient tread significantly increases stopping distance in wet conditions.
Explanation
The legal minimum tire tread depth in most states is 2/32 of an inch. Insert a penny into the tread and if Lincoln head is fully visible you need new tires. Insufficient tread significantly increases stopping distance in wet conditions. Understanding this concept is essential for safe driving and will help you answer similar questions on the DMV written test.
Why This Matters on the DMV Test
Questions about Safe Driving are among the most common on the permit test. Knowing the correct answer helps you pass your exam and stay safe on the road. Most states require a score of 70–83% to pass.
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