Hanging and platform hitch bike racks have a lot in common, but they also have some key differences that may make one a better choice for you. Both hold bikes behind cars and both styles have deluxe models that can hold multiple bikes. One way they differ is in terms of loading -- platform racks support bikes from below, so setting them in the rack doesn't require much lifting. Hanging racks support bikes from their frames, so users have to lift the bikes higher in order to secure them. Platform racks also tend to be more expensive than hanging racks. There is no "better" choice between hanging racks and platform racks -- just a choice that's best for your individual situation.