The tread depth on front steering wheel tires should be:
Answer: C
Not less than 4/32 inch.
Front tires need more tread depth than other wheels to ensure the best control of the vehicle. Tread depth should be no less than 4/32 (1/8) inches for front tires and 2/32 inches for other tires.
All choices
- AMore than 6/32 inch.
- BNot less than 2/32 inch.
- CNot less than 4/32 inch.
Why the other answers are wrong
A. More than 6/32 inch.
Choice A is wrong because front tires require at least 4/32 inch tread depth, not more than 6/32 inch.
B. Not less than 2/32 inch.
Choice B is wrong because 2/32 inch tread depth is the minimum for other tires, but front steering tires need at least 4/32 inch.
CDL General Knowledge Test Info
Questions on Exam
50
Passing Score
80%
Time Limit
Typically 60 minutes; varies by testing location
The General Knowledge test content is federally standardized, so this question applies in every state. Age limits, fees, and testing procedures do vary — check your state's CDL requirements.
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