I've been using them for a while, towing my airstream and boat. I have been at or around the max towing capacity many times and have had no issues. Tows great. One thing I would suggest is play around with the air pressure settings on them because you want them at a point where they still allow the spring to articulate to create a smooth ride. If you stiffen (fill) them too much you will get a fighting effect between the tow and the truck. If you get it just right I would argue it tows as good as anything I've pulled with. I'm generally between 18 and 22psi but there are too many variables to take into account.