Regarding Hub Protrusion

HUB PROTRUSION

Most vehicles' axle hubs have a central protruding part that serves a number of purposes, one of which is helping the rims locate centrally onto the hub. The design and height of this central protrusion varies significantly from vehicle to vehicle, make to make, model to model, year to year, and can be a source of fitment issues particularly in regards to hub centric spacers (i.e. ones with a hub centric lip)

 

If you are ordering a spacer with a hub centric lip is important to be aware of: in cases where the wheel centre bore is <4mm greater than the car centre bore, there is a step on the inside bore of the spacer necessary to support the hub centric lip. So that the spacer can sit flush on the hub, your vehicle's hub protrusion must not exceed the bore depth, so PLEASE CHECK YOUR HUB PROTRUSION BEFORE PURCHASING! Please note that we are not able to determine your hub protrusion for you; you must remove a wheel and measure the hub. Please see the picture below for an example of how to measure this. If you do not feel comfortable doing this yourself, we recommend speaking to an automotive mechanic

If you place an order and do not mention the hub protrusion to us, we will assume you have checked it and found it to be under the limit. If you do not check and find afterwards that your hub protrusion is too high for the spacers, the buyer will bear the cost of either fixing or replacing the spacers!
To determine how this may affect you, please use the following guide for reference. The bore depth varies according to thickness AND the difference between the wheel centre bore (WCB) and car centre bore (CCB) sizes
Spacer Thickness    Bore Depth A    Bore Depth B
10mm 8mm 8mm
12mm 10mm 10mm
15mm ~12.5mm 12mm
20mm ~18mm 15mm
25mm ~22mm 20mm
30mm ~27mm 25mm
35mm ~32mm 30mm
40mm ~37mm 35mm
50mm ~47mm 45mm
Bore Depth A applies if: -2mm ≤ WBB - CCB < 4mm 
For example: WCB 69.5mm - CCB 67.1mm = 2.4mm; therefore Bore Depth A applies
Bore Depth B applies if: WBB - CCB < -2mm
For example: WCB 69.5mm - CCB 74.1mm = -4.6mm; therefore Bore Depth B applies
If WCB - CCB ≥ 4mm the internal spacer bore is machined the entire way through without an internal supporting step required. In such cases, hub protrusion should not prevent the spacers sitting flush
In certain cases, it may be possible to increase the bore depth but further factors apply in determining that so please contact us for more information. If it is possible to do so, an additional cost (determined on a case by case basis) will be required to produce such spacers
If you have questions or concerns about this information, please contact us