Towed for the first time with my new truck this past weekend. Total towing weight was about 14,000 lbs - horse trailer and 3 fat quarter horses. Can't offer much opinion regarding performance going only 55mph. However, I did notice something new (new to me, anyway). When I would be going downhill with a grade about 4% the engine would automatically switch to a lower gear. Is this part of the cruise control or something else towing-related? I thought it was pretty neat keeping me in line like that but wasn't sure why.
My truck before this new one was a 1997 Ford 250 7.3 diesel. I had that truck forever and it didn't do anything fancy like this new Dodge.