CDL · Vehicle inspection
What is the minimum tread depth required in every major groove of a front tire?
Correct answer: 4/32 inch.
Answer options
- A6/32 inch
- B4/32 inch Correct
- C2/32 inch
Why
Front tires, which do the steering, must keep a minimum of 4/32 inch of tread in each major groove; other tires may go as low as 2/32 inch. Deeper tread up front helps you keep steering control.
About this question
Topic: Vehicle inspection License: CDL
Part of these practice sets:
Where it applies: Asked in every state.
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This question is part of Inspecting Your Vehicle (32 questions). Take the full set and check your score.
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