Here are some common terms used with hub rings that may help explain what they do:
Hub Pilot: Refers to the center of your vehicle axle, on which the wheel rotates.
Center Bore: The hole in the center of the wheel that attaches directly to the hub pilot of the vehicle.
Hub-Centric Wheels: Wheels that have a center bore that matches the size of the vehicle’s hub pilot.
Non-Hub-Centric Wheels: Wheels that have a larger center bore than the vehicle’s hub pilot.
What do Hub Rings do?
Most aftermarket wheels are non-hub-centric, which means the center bore of the wheel is larger than the hub pilot of the vehicle. Hub rings fill the gap between the wheel’s center bore and the hub pilot. This aligns and centers the tire and wheel assembly on the vehicle. Although hub rings are not required, they can play a role in minimizing vibration. Note: Hub-centric rings don’t carry any load.
While most aftermarket wheels are lug-centric, original equipment (OE) wheels, the wheels that come on the vehicle when new, are hub-centric and don’t require a hub ring.
Do I Need Hub Rings?
If you have OE wheels, you don’t need hub rings. OE wheels are designed to fit your vehicle just right, so the hub rings are unnecessary. On the other hand, if you’re installing aftermarket wheels, you’ll probably need hub rings to ensure the ideal fit. Most aftermarket wheels are non-hub-centric. If you’re unsure whether or not you need hub rings, feel free to give us a call and we can help determine if your vehicle and the wheels being used will require hub rings.
What Size Hub Rings Do I Need?
If you do need hub rings, you’ll need to make sure they’re the right size for your wheel and your vehicle. Hub rings are sized from the outer diameter to the inner diameter. The outer diameter is the hub bore of the wheel in millimeters. The inner diameter is the diameter of the hub pilot in millimeters.
For example, a hub ring size of 73-67.1 would mean that the wheel center bore is 73 mm wide and the vehicle hub pilot is 67.1 mm wide.
Want help making sure you get the right hub ring size? Feel free to give us a call or stop by any of our America's Tire locations and we'll get you taken care of!