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General Knowledge
Steer Tire Tread Depth
Mandatory Inspection Spec • VA CDL Class B
Exam Question Prompt
"What is the minimum allowable tread depth for front steer tires on a commercial bus?"
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Official DMV Standard
Correct DMV Answer
4/32 inch in every major groove. Recapped or re-grooved tires are strictly prohibited on front steer axles.
Memory Anchor
Steer tires require deeper tread (4/32").
Key Rule Caution
NO recaps allowed on steer axle!
Virginia CDL Class B Knowledge Base
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