Wallruss stated that :
At the moment there is no legislation anywhere in Australia that permits a private vehicle to tow anything greater in width than the maximum specified of 2.5 metres.
This is NOT correct, we CAN tow over width in a private vehicle, with a permit here in Western Australia. Go to the site below and read page 6
Cheers, Taz
http://rac.com.au/Motoring/Motoring-advice/About-my-car/~/media/Files/PDFs/motoring_DPI_safe_towing_guide.ashx