Here is a link that may be
very helpful to those that are trying to figure out what they can tow with their TV.
http://changingears.com/rv-sec-calc-...eight-tt.shtml
The most important figure that one needs to use in this (or any) calculator is the Gross Combined Weight Rating (GCWR). Of course, all of the other factors must be acurate as well but the GCWR seems to be the most difficult (and most important) to find on some vehicles.
It would certainly be wise of any trailer manufacturer to post that link in their website. It would certainly be a good "CYA".