Heavy Vehicle (Vehicle Standards) National Regulation (NSW)
23Wheels and tyres—size and capacity
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23 Wheels and tyres—size and capacity
23 Wheels and tyres—size and capacity
(1) The wheels and tyres fitted to an axle of a heavy 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.
(2) For the purposes of subsection (1), the size and capacity of a pneumatic tyre fitted to an axle of a heavy vehicle must be determined at a cold inflation pressure of not more than the lesser of the following—
(a) the pressure recommended by the tyre manufacturer;
(b) a pressure of—
(i) for a radial ply tyre—825kPa; or
(ii) for another tyre—700kPa.
(3) In this section—
radial ply tyre means a radial ply tyre within the meaning of ADR (Definitions and Vehicle Categories).