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Question

Difficulty: EasyTires, Wheels, and Rims Inspection

When examining the front steer axle tires of a commercial motor vehicle, what is the minimum allowable tread depth required in every major groove?

  1. A
    2/32 inch
  2. B
    1/32 inch
  3. 4/32 inchAnswer
  4. D
    6/32 inch

Answer

4/32 inch is the minimum allowable tread depth required in every major groove on front steer axle tires.
Federal commercial vehicle inspection regulations strictly require a minimum tread depth of 4/32 inch in every major groove on front steer tires to maintain traction and safe vehicle maneuverability.

Step-by-Step Solution

1
Identify the wheel position specified in the scenario
The question specifies front steer axle tires.
Commercial motor vehicle inspection standards enforce different minimum tread depths depending on axle position.
2
Apply the regulatory minimum tread depth threshold for steering axles
Steer axle tires require at least 4/32 inch of tread depth in all major grooves.
Front steering tires require deeper tread than other positions to maintain directional control and prevent hydroplaning.

Key Concept

Federal Motor Carrier Safety Regulations require at least 4/32 inch tread depth on front steer tires and at least 2/32 inch on all other tires.
Estimated Time:40s
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Topics

Tires, Wheels, and Rims Inspection

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