Which statement correctly describes the minimum tread depths for front steering tires and all other tires?

• A. Front steering tires require 2/32 of an inch; all other tires require 4/32 of an inch
• B. Front steering tires require 4/32 of an inch; all other tires require 4/32 of an inch
• C. Front steering tires require 4/32 of an inch; all other tires require 2/32 of an inch
• D. Front steering tires require 2/32 of an inch; all other tires require 2/32 of an inch

Answer: (C)

The key idea is that tread depth requirements differ by tire position because steering tires wear under different loads and must maintain grip for safe control, especially in emergency driving. Front steering tires need more tread to preserve steering response and traction, so the minimum is four thirty-seconds of an inch. All other tires can meet with a shallower minimum of two thirty-seconds of an inch, since they’re not directly responsible for steering but still must have enough tread to provide safe braking and stability. This difference helps ensure the vehicle can steer reliably and stop effectively under adverse conditions; if front tires wear down to or below four thirty-seconds, they’re not acceptable, while other tires must be at least two thirty-seconds to be compliant.