Another consideration when choosing a cargo carrier is what type of hitch your vehicle has. There are three standard receiver sizes—1.25, 2, 2.5 inch. Consequently, you need to be sure the neck of the cargo carrier you choose will fit properly into your hitch receiver. Additionally, there are five different hitch classes, and weight ratings vary greatly among the classes. Class 1 hitches are equipped with a 1.25-inch receiver and are made for passenger cars and small crossovers. Class 2 hitches have the same receiver but are rated for heavier loads than Class 1. Class 3, 4, and 5 hitches are all rated for more capacity than either 1 or 2 and can pretty much carry whatever your cargo carrier will support. If you don’t already have a hitch receiver, you’ll need to have one installed in order to use a hitch-mount cargo carrier.