What is the minimum required groove depth of a tyre?

Question:

Can you kindly confirm what the minimum groove depth of a tyre fitted on a vehicle with a carrying capacity of more than 4 tons is.

Answer:

It is the same for all vehicles. Level with the tread depth  indicator or 1mm across the circumference of the entire tyre.

(j)         a motor vehicle—

(i)         which is fitted with a pneumatic tyre unless such tyre displays throughout, across its breadth and around its entire circumference, a pattern which is clearly visible, and has a tread of at least one millimetre in depth;

(ii)        which is fitted with a pneumatic tyre which contains a tyre tread depth indicator, if the tread is level with the tyre tread depth indicator:

Alta

Alta Swanepoel & Associates CC

Also view:

Tyre Safety and Road Safety