If you’re towing something heavy such as a horse trailer, you’ll want to look for a Ram truck equipped with dual rear wheels. The Ram 3500 is available with dual rear wheels and, when equipped with the available 6.7L Cummins High-Output Turbo Diesel I6 engine, can tow a maximum of up to 35,100 poundsDisclaimer: When properly equipped. See dealer for details. with confidence.