VSB09 is the guide to follwo in NSW if you want to stay legal, here is what you can do with Tyres without notifying the RTA:
http://www.rta.nsw.gov.au/registrati...vsi09_rev4.pdf
Quote:
Minor changes to wheels
Wheels up to 26mm wider than the largest optional wheel recommended by the vehicle manufacturer for the vehicle can be fitted without the need to notify the RTA.
The outside diameter of the wheel and tyre combination must be no more than 15mm over the largest diameter wheel and tyre combination specified for the vehicle and not more than 15mm below the smallest diameter wheel and tyre combination specified for the vehicle. |
For a 17" wheel this equates to a 245/65/17.