Western Australian Consolidated Regulations

ROAD TRAFFIC (VEHICLE STANDARDS) RULES 2002 - REG 48

48 .         Tyre tread

        (1)         A tyre on a motor vehicle must not have cleats or other gripping devices that could damage road surfaces.

        (2)         Except at tread wear indicators, a tyre fitted to the vehicle must have a tread pattern at least 1.5 mm deep in a band that runs continuously —

            (a)         across —

                  (i)         for a vehicle with a GVM over 4.5 t — at least 75% of the tyre width that normally comes into contact with the road; or

                  (ii)         for another vehicle — the tyre width that normally comes into contact with the road;

                and

            (b)         around the whole circumference of the tyre.

        (3)         A vehicle must not be fitted with a tyre that has been treated by recutting or regrooving the tread rubber, unless the tyre was —

            (a)         constructed with an extra thickness of rubber designed for recutting or regrooving; and

            (b)         labelled to indicate the construction.