Question

Difficulty: EasyTires, Wheels, and Rims Inspection

Under federal commercial motor vehicle safety standards, what is the minimum acceptable tire tread depth required in every major groove on drive and trailer axles?

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

Answer

2/32 inch is the minimum allowable tread depth required in every major groove on non-steer (drive and trailer) tires.
Federal commercial motor vehicle safety regulations require a minimum tread depth of 2/32 inch in every major groove on all non-steer tires (drive, trailer, and dolly axles). Steering axle tires require a minimum of 4/32 inch.

Step-by-Step Solution

1
Identify the specific axle position indicated in the question.
The question specifies drive and trailer axles (non-steering wheel positions).
Commercial vehicle safety standards establish different minimum tread depths depending on whether a tire is on the steer axle or another axle.
2
Apply the federal minimum tread depth regulatory standard for non-steer tires.
Non-steer tires require at least 2/32 inch of tread depth in every major groove.
Front steer tires require 4/32 inch of tread depth, while all other tires (drive, trailer, and tag axles) require a minimum of 2/32 inch.

Key Concept

Minimum Tire Tread Depth Regulations for Non-Steering Axles
Estimated Time:45s
Rate this question