G'day Moore family , and welcome to forum.
We also have the 20.63-1 outback and love it . We have the 2013 model with the older type suspension. I assume yours has the newer type ( Jayco J Tech ) with the independent coil suspension. How do you find it? I have a mate who has same model as yours and he is finding that he cannot tow above 90-100km/hr without it starting to sway. He previously had a 18 foot expanda without any problems and is a little dissapointed. He is an experienced driver and drives B double trucks for a living, so he knows what he is talking about. Not that you would want to tow at over 100km/hr (IMO) but it is nice to know that if needed ( for overtaking for example) that you could do so safely.
I would be interested in you thoughts , or anybody else .
Melon
Hi @Melon2155
Yep our 20.63-1 is the j-tech suspension. We have towed at well over 100km/hr and never experienced any sway. In fact like yours it always seems rock solid, you could almost forget it's there sometimes.
I understand your friend is experienced but it sounds like he either has over inflated tyres or not enough weight on the tow ball.
Perhaps he should take it back to jayco so they can check out the suspension for faults.
Hope this helps