My wife and I pull a 31' overall Bullet 269RLS ultra-lite with a GVW of 7,500 lbs (around 6,600 lbs or so loaded for a trip) with a 2013 F150 Platinum Screw 3.5 EB 4x4 with 3.73 rear end and Max Tow using a Blue Ox Sway Pro hitch. Our F150 handles the trailer very well, with plenty of power and no sway issues in a variety of road, mountain and weather conditions. Having said that and knowing on paper, at least, according to the Ford towing guide we can tow up to 11,200 lbs, I would still prefer to have a F250 and I would not consider getting any bigger trailer, personally, unless I get at least a F250. From following several forums I know a lot of F150 owners pull bigger trailers and haven't had any problems (so far), but I believe its pushing what the F150 is designed to do and most likely putting a lot of strain and wear on their trucks, not to mention possible safety issues. It's not a matter of having enough power, because the 3.5 EB is a beast, but to me more a matter of handling a bigger trailer without safety issues.
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