Marcel explains that on a vehicle exceeding 3.5 tonnes, the tyres must have a tread depth of:

Explanation: • 1 mm across 3/4 of the width of the tyre: No, this would be correct but it is not a complete answer.
• 1.6 mm across 3/4 of the width of the tyre: No, This would not be applicable if the vehicle exceeded 3.5 tonnes neither is this the most complete answer.
• 1.6 mm across 3/4 of the width of the tyre and around the complete circumference of the tyre: No. This would be correct for a vehicle not exceeding 3.5 tonnes.
• 1 mm across 3/4 of the width of the tyre and around the complete circumference of the tyre: Yes.

Category: CPC Case Studies: Technical Matters