There could be 3 reasons why no centering rings were included with your order. The most common reason would be that your wheel is made hub-centric to your vehicle and does not require centering rings. Another reason why no rings are included in an order is due to the type of wheel ordered. Steel wheels, or wheels with push-through style derby caps do not take centering rings. Lastly, trucks with 8 bolt lug patterns generally do not use centering rings, so they are not included with our installation kits.