Hitch-mount bike carriers come in two basic styles—platform and hanging. Each has its benefits and liabilities, depending on what kind of bikes you have and how you prefer to transport them. Platform-style carriers provide a more stable platform and eliminate much of the sway that many hanging carriers display. They also tend to keep bikes from touching each other as much, saving the finish from dings and scratches. Lastly, since your bike rests on its tires in the rack, there is little or no contact between your bike frame and the carrier. Hanging-style racks, on the other hand, typically are less expensive than platform racks, and while they are usually lighter in weight than platform racks, they also make direct contact with your bike’s frame, leaving the opportunity for damage. Most are well padded, however, lessening the problems caused by contact.