What’s the legal minimum depth of tread for car tyres?

Explanation: Car tyres must have sufficient depth of tread to give them a good grip on the road surface. The legal minimum for cars is 1.6 mm. This depth should be across the central three-quarters of the breadth of the tyre and around the entire circumference.

Category: Safety and your vehicle

References: The Official DVSA Guide to Driving: Section 14, Highway Code: Page 129