You’re driving a double-deck bus. What’s the minimum depth of tread required over three-quarters of each tyre’s width?

Explanation: It's essential that the tyres on your vehicle are in good condition. You must never forget that you have passengers on board. Their safety must be your priority. At no time should the depth of the tread be less than 1 mm over three-quarters of the width of the tyre.

Category: Vehicle Condition

References: The Official DVSA Guide to Driving Buses and Coaches: Section 2