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Wheel Fitment Guide

Having the proper brake clearance is crucial to find out before you head over to your brake specialist.  To do this, you will need to consider the two primary factor that determines the fitment and must clear with at least 2mm gap all around;


1.  Diameter Clearance

2. Offset Clearance

The Diameter Clearance determines the total clearance inside your wheel, behind your wheel spokes diameter-wise.   For example; An 18" wheel maximum typical diameter clearance usually fits brake discs that are 356mm to 360mm.  But having the diameter clearance does not mean you have the offset clearance.


The Offset Clearance determines the clearance behind your wheel spokes to the surface of your hub.  We recommend a 2mm minimum of clearance from our calipers to the wheel spokes. If you have 1.5mm without spacers you should be OK, but if your car exhibits any level of knock-back or hub flex you might end up with contact if you autocross or track the car.


  • STEP 1: Look up your vehicle application (Year/Make/Model) 

  • STEP 2: Select your desired brake system.

  • STEP 3: Download or open the PDF document listed under Wheel Clearance information.

  • STEP 4: Print out the document, but be sure to make sure you’re printing at full scale (1:1 or at 100% size). There’s a scale check in each drawings near the left-hand side of the page to compare it with.

  • STEP 5: Cut out the shape of the template to include the caliper, bell/hat, and disc/rotor.

  • Optional: You may want to back the cut-out with a piece of cardboard or foam core to make sure that the template is sturdy enough to get a proper gauge of your wheel clearance.


  • STEP 1: Remove a wheel.

  • STEP 2: Place the wheel carefully on its face and measure out the A/B/C dimensions with a straight edge or create a template from the clearance diagram.

  • STEP 3: If using a clearance diagram attached to tag board as a template, be sure to double check that the template retains the actual dimensions from the original diagram.

  • STEP 4: Allow 2mm to 3mm in all directions from the caliper to the wheel.

  • STEP 5: If the caliper contacts the inner wheel spokes, a wheel spacer may be used to move the wheel out away from the caliper. When using spacers, we recommend only considering high quality hubcentric spacers (and longer wheel bolts/lugs when needed). It is also important to confirm that the wider track will allow the tire to clear the fenders in all positions.

Click Here to download the PDF Instructions.  If you are experiencing difficulties, please contact us at

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