I tow a tandem axle, ATV trailer that is usually at or near the max towing capacity. I did this with my previous 22' ST and now with my 25' ST. All has been good as long as my trailer brakes are working well and I had a brake controller. I recently took a trip from my home state of Michigan to West Virginia for an ATV & dirt bike ride. I was deffinately at the max GCWR for the vehicle and the trailer traveling through the steep Appalachian Mountains. The Explorer did really well.