Hub centric rings are rings that cover the spacing between the center bore of an aftermarket wheel to the hub of the vehicle. In certain cases aftermarket wheels usually have a standard center bore size to accommodate a wide variety of vehicles. There are different sizes of hub centering rings and they are measured in millimeters which are available through the dealer who sold the wheels. Hub centric rings are important because they secure the wheel in place, and they ensure that the wheels are perfectly centered on the vehicle’s hub. This helps to prevent any type of vibration issue.