VA Class B CDL Master Suite 155 Cards

General Knowledge, Driving Safely, Air Brakes, Passenger, School Bus & Pre-Trip

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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?"

Click or Press Space to Reveal Answer
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