Practice question
Minimum tread depth for steering-axle tires on a CMV (49 CFR § 393.75) is:
- 1/32 inch
- 4/32 inch (4/32" measured in any major tread groove for steer tires; 2/32" for other tires)
- 8/32 inch
- 10/32 inch
Answer: B — 4/32 inch (4/32" measured in any major tread groove for steer tires; 2/32" for other tires)
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