Western Australian Consolidated Regulations

ROAD TRAFFIC (VEHICLE STANDARDS) RULES 2002 - REG 46

46 .         Tyres — manufacturer’s rating

        (1)         This rule applies to a motor vehicle if the vehicle —

            (a)         has 4 or more wheels;

            (b)         was built after 1972; and

            (c)         has a GVM not over 4.5 t.

        (2)         However, this rule does not apply to a tyre if the tyre —

            (a)         is recommended by the vehicle builder as suitable for limited use on the vehicle in special circumstances at a speed less than the speed applying to the vehicle under subrule (3); or

            (b)         is being used in an emergency as a temporary replacement for a tyre complying with this rule.

        (3)         A tyre fitted to a motor vehicle must, when first manufactured, have been rated by the tyre manufacturer as suitable for road use at the lesser of —

            (a)         a speed of at least —

                  (i)         for a car with special features for off-road use —140 km/h;

                  (ii)         for another car — 180 km/h; or

                  (iii)         for another motor vehicle — 120 km/h;

                and

            (b)         the vehicle’s top speed.

        (4)         This rule applies to a vehicle instead of the tyre speed category requirements in the relevant ADR.