APEX aluminum hub centric rings have an inner diameter of 64.1mm and outer diameter of 72.56mm, and are made specifically for the Tesla Model S in order to be compatible with APEX BMW wheels.
Tesla Model S center bore requirement: 64.1mm
APEX BMW wheels center bore: 72.56mm
What are Hub Centric Rings, and Why do I Need Them?
Hub centric rings (or centering rings) are small rings traditionally made of aluminum or plastic which sit in between the vehicle's hub and the wheel center bore to fill a gap. The rings ensure wheels with a larger centerbore are properly centered to your vehicles hub, eliminating the chance of vibration. Centering rings are required for all Tesla Model S using APEX BMW wheels.
Installing Hub Centric Rings
Installing APEX hub centric rings is very easy, and does not require special tools. After ensuring your vehicles hub is clean and free from surface rust or debris, simply slide the rings onto your vehicle's naked hub. From here you may use the standard wheel installation process per your vehicles manual. Slide your APEX BMW wheels onto the hub, followed by hand tightening your lugs in a star pattern. Once the wheel is secured evenly to the hub and the vehicle is sitting on the ground, apply the proper torque specifications to your lugs in a star pattern.