Most I've pulled has been about 3000 lbs, probably 2/3s of that was trailer weight, 1/3 was live weight (horse) and it was rediculously scary. If it hadn't been an emergancy situation I wouldn't have even attempted it BUT never went over 45 and I live on the coast...couldn't find a hill if you had to! Light weight trailers, flatbeds, john boats, good with all that! I'd stay away from a short tongue trailer if you can and put most of the weight in front of the axle. Rest just depends on you, definitely recommend doing some test drive short trips to see how it goes though!