Using aluminum hub rings will help center your aftermarket wheels to the wheel hub of your vehicle. This will minimize any vibrations caused by the spacing between the wheel and wheel hub.
The first number is the outer diameter of the hubring (used to closely match the hub bore of your wheel). The second number is the inner diameter of the hubring (used to match the center hub diameter of your wheel hub). Measurement is in millimeters.
NOTE: If you have any questions about what diameter your vehicle requires, please contact us before purchasing.