If you are considering buying any type of bike racks, you should consider a few things. The first being, how frequently you will need to use your bike rack and is this bike rack for storing your bike at home or one for your car. If you do not use your bike racks for cars often, you will want to consider how heavy it is and how complicated it is for removing from your car. In choosing bike racks for cars, you also should think about how far you plan to travel with your bike on your car and how heavy your bike is. Both of these can determine what location you might consider for locating your bike racks as well as how sturdy of a rack you might need.
When looking at bike racks for cars, consider if you do other sports because you can purchase bike racks that will work for other types of gear as well. For bike racks in your garage or home, once again you should think about the weight of your bike and whether or not you are going to be hoisting it up onto the rack. If you have more than one bike, you should be considering bike racks, which will hold the amount of bikes you own.