Tow capacity on the 2015 model is listed at 7650lbs. Tongue weight is 1000lbs. I would assume the 2005 may be near that but only you will know for sure based on actual vehicle stickers. Flat towing will have neligible tongue weight but requires extra precautions to prevent damage to the transmission on most vehicles. Assuming you would flat tow you could tow just about anything except full size trucks and SUV`s. However, I woud recommed keeping it as small as possible.