Wheel spacers can easily solve big brake clearance issues. Before installing a performance or racing brake system, you should always confirm that there is enough room left for wheels, regardless of wheel size. Typically, performance brake calipers are bigger than the originally equipped ones. Larger brakes are often required more space to fit. Thus, it is necessary to utilize wheel spacers or to upgrade to aftermarket wheels with more backspacing. Aftermarket wheels usually vary in styles, seat types, and materials. It may spend more time and budget to get the correct set. In this case, wheel spacers are another cost-effective option to maximize wheel fitment easily.
By moving the wheel outward from the caliper, wheel spacers prevent the caliper from contacting the inner wheel spokes. Use a straight edge to measure the increased height, if the value is 9mm, then you need 12mm wheel spacers (please allow at least 3mm in all directions from the wheel to the caliper). The thicker wheel spacers you install, the farther the wheel is pushed out. It is also important to ensure your rims and tires don’t rub against the inner wheel well.
Do I Need Longer Wheel Stud for Wheel Spacers?
In short, wheel spacers provide the necessary space needed for a big brake kit. There are slip-on wheel spacers and bolt-on wheel spacers. If you get slip-on wheel spacers, you are likely to need longer wheel studs to achieve a safe thread engagement. For instance, if the thread length of your OE wheel studs is 15mm and you get 10mm wheel spacers installed, then you would need longer wheel studs with 25mm thread length (stock stud length + spacer thickness = extended wheel stud length). Considering the longer part may protrude a lot, you would also need open-ended lug nuts. You don’t need to worry about running out of thread on the wheel studs. Commonly, this looks cool in many racing cars.
On the other hand, if you get bolt-on wheel spacers, you don’t have to use longer wheel studs. They are bolted to the existing studs with the provided lug nuts and then use the stock lug nuts to secure the wheel on the new studs pressed into the spacer. This allows for a full thread engagement. Generally, they come in thicker sizes like 15mm, 18mm, 25mm, if you need above 15mm spacers, we will recommend these.
Are Brake Wheel Spacers Universal?
Make sure you get hub-centric wheel spacers for a specific car. Universal spacers are made with bigger center bores which allow for fitting various vehicles. This would mean they are centered only by the torque of lug nuts, rather than the hub flange. Without a firm connection, the wheel cannot be centered on the axle, leading to annoying wheel vibrations while driving. On the other hand, hub-centric wheel spacers come with hub-centric rings which are made specifically to fit your vehicle. In this way, the wheels are centered by the hub connection and the lugs can hold them flush against the brake rotors. This allows the wheel to support the vehicle’s weight and fill the gap for a more tightly fit, reducing vibration. BONOSS wheel spacers come with better multi-stage hub-centric rings. The hub-centric metal ring is machined to be multi-layers, the bevels fit for the corresponding hub flange, which eliminates any possible gaps.