Slideouts add weight. If you plan to tow a vehicle that adds more. If you plan to carry something heavy on the receiver like a scooter or motorcycle that will cause the front end to get lighter and more difficult to steer. A bike is fine. Unless you enjoy buying transmissions no matter what the receiver weight is (likely 500 lbs tongue weight) do not tow a car. You will be close to gross vehicle weight. Yes, the specs say it is ok, but that spec is based upon the expectation that most of the time the vehicle will not be used at that weight. With an RV towing you will be at or near max vehicle weight all the time. Same as driving at max speed the vehicle is capable of. Just because it can do 100MPH does not mean it will last long at that speed.