The tires on which portion of the vehicle must have a tread depth of at least 4/32 inch?

Question

Accepted Answer

A: Wheels used for steering. The tires on wheels that steer the vehicle (steering axle or independent suspension) need to have a minimum of at least 4/32 inch of tread.

The tires on which portion of the vehicle must have a tread depth of at least 4/32 inch?

Massachusetts CDL Pre-trip Inspection Test Info