A commercial motor vehicle operator conducts a scheduled en-route vehicle inspection at an interchange and records tire tread depth measurements across multiple wheel positions. Which of the following recorded conditions complies with federal commercial vehicle safety inspection standards?
- AA front steering tire displaying a tread depth of 3/32 inch across all major grooves
- BA front steering tire displaying a tread depth of 2/32 inch across all major grooves
- A tractor drive tire displaying a tread depth of 3/32 inch across all major groovesAnswer
- DA trailing unit tire displaying a tread depth of 1/32 inch across a major groove
Answer
The condition where a tractor drive tire displays a tread depth of 3/32 inch across all major grooves complies with safety standards.
Commercial motor vehicle safety regulations require a minimum of 4/32 inch of tread depth in every major groove on front steer tires and at least 2/32 inch on all other tires (drive and trailer axles). A tractor drive tire measuring 3/32 inch exceeds the 2/32-inch requirement and is fully compliant.
Step-by-Step Solution
Key Concept
Commercial Vehicle Tire Tread Depth Regulations
Estimated Time:1m 0s