It depends on the year and model of your QX60. Is it AWD, FWD, Hybrid? These things matter and towing 5,000+ pounds in an SUV (2014 QX60) rated for 3,500 pounds of towing capacity will do your engine and transmission a huge disservice. Is your vehicle loaded too? Adjust your calculations according. Read your manual and don't assume...Anyone have experience hauling a trailer with a weight of 4,500 - 4,800 pounds? The QX60 is supposed to be able to handle up to 5,000 pounds.