We are towing our Sp220 with a 2013 Explorer (which has a little more power the the 2010 Frontier). While we have only had one trip out it was in 30 to 40 MPH winds and because of my lack of electric brake knowlege, we had no electric brakes (I had turned them all the way down thinking it was up
). All of this was on the back roads and 2 lane highways of SE Indiana and we made it in one piece.
Seriously, I didn't have any issues stoping and the power felt fine. I doubt that it will pull up hills at 65 MPH. We do travel light however. No water on board.