one of the reasons they ask what you're towing is because they have different width dollies. If you have too narrow a dolly, it might damage the fenders of what you're towing on a real tight turn. Recently, I dollied an 02 intrepid and I had to have the widest of the three widths dollies. As far as the tow vehicle, I used a 4.0L 01 Cherokee to tow a dollied 95 LHS(probably 4400 lbs), and I had zero problems. That said, I wasn't towing up or down any mountainous grades.