South Australian Numbered Regulations

ROAD TRAFFIC (LIGHT VEHICLE STANDARDS) RULES 2018 (NO 5 OF 2018) - REG 46

46—Wheels and tyres—size and capacity

        (1)         In this rule—

"ADR (Definitions and Vehicle Categories)" means the ADR titled Vehicle Standard (Australian Design Rule - Definitions and Vehicle Categories) 2005 ;

"radial ply tyre" means a radial ply tyre within the meaning of ADR (Definitions and Vehicle Categories).

        (2)         The wheels and tyres fitted to an axle of a vehicle must be of sufficient size and capacity to carry the part of the vehicle’s gross mass transmitted to the ground through the axle.

        (3)         For the purposes of subrule (2), the size and capacity of a pneumatic tyre to be fitted to a vehicle must be decided using a cold inflation pressure that is not more than the lesser of—

            (a)         the pressure recommended by the tyre manufacturer; and

            (b)         a pressure of—

                  (i)         for a radial ply tyre—825 kilopascals; or

                  (ii)         for another tyre—700 kilopascals.