Don't think so. I have just had a 2008 specific Thule towbar fitted but may have made a boo boo. Found out today that the folding camper I have sits a bit too low - cables trailing and jockey wheel tyre now has an unslightly bald patch where it was rubbing off the ground as we were going along (despite being fully retracted for towing).
I was thinking that perhaps Thule towbars are not designed for towing trailers or caravans, but can't find anything on their website to suggest they are not.
Does anyone know otherwise?