The law is that you have to have towing mirrors if the trailer obscures your rear view from the car's standard mirrors.
I have tried a few different types but now use the Millenco Grand Aero which I can recommend.
Dougwe said
07:04 PM Dec 8, 2018
I remember many moons back that if any towed vehicle was wider than the towing vehicle you HAVE TO HAVE towing mirrors fitted.
Do I legally have to use extended mirrors, can anyone give me any advise on what to get, we will be traveling for a few years.
Personally I have been using strap on types for 40 years - main thing is to remove them when not towing.www.supercheapauto.com.au/p/sca-sca-towing-mirror---clamp-on/342034.html
You must use on both sides of vehicle.
Gday...
This site might help Paul.
http://rveethereyet.com/truth-towing-mirrors/
Cheers - John
Maybe just fit them best to be safe.