What's the minimum tread depth for your car tyres?

The legal minimum tread depth for cars is 1.6 millimeters. This 1.6 mm should be in a continuous band throughout the central three-quarters of the tread width, throughout the whole of the circumference.

This rule is applicable for Cars and Light trailers including Caravans weighing up to 3,500 Kgs and/or eight passenger vehicle. This also includes Motorcycles above 50cc, all these vehicles must ensure that the grooves of the tread pattern have a depth of a least 1 mm throughout a continuous band measuring at least three-quarters of the breadth of the tread and round the entire outer circumference of the tyre. 

Minimum tread depth for cars and Light trailers