Three Piece Wheel Builder

I wanted to share a wheel builder spreadsheet I made when I built my new wheels.  It’s nothing fancy, and it won’t tell you if the wheels will fit, but it will tell you the barrel and lip size you will need to do the build yourself. There might be some strange rounding issues in some cases so you’ll have to use your best judgment to round up or down when it deems fit (I’ll get into that down below).

In the sheet it will show you how to get your measurements and examples of the different types three piece wheels.

**I have not personally tested this out on Face Mounted wheels to confirm measurements, but i'm pretty confident in the math that it will work out**

Here's the link to the wheel builder, (you'll need a google login to use it). https://docs.google.com/spreadsheets/d/1MVAT1CuyROOHGq5NhGl64RES6q8-W0U3XJG-zS51wA4/edit?usp=sharing

Heres a run down on my wheel build for an example.

• I wanted 9.5” front wheels with a +5 offset. My faces are rear mount and measurement for my center disk depth was .125".

  
  

• Calculations came out as the following: 

• 5.07” Barrel

• 4.42” Lip

So I went with 5” barrels and 4.5” lips. (After assembly, I measured the wheels after I put them together and I was within 1mm.)

My example was kind of an easy one, so let’s do a more difficult situation.

 We’ll use my same desired specs (9.5” wheels +5 offset) but change the center disk depth. 

Let’s pick .8” center disk depth. This makes our lip and barrel measurements the following:

• 3.753” Lip

  
  

• 5.74” Barrel

Lips and barrels only come in whole and half sizes. (4, 4.5 5, 5.5” ect) so the calculated sizes won’t work. 

So you'll need to decide to either go up or down with the barrel or lip size. Which one you pick will change your offset.  With that being said, you can play with the offset to get the lip and barrel size closer to a whole or half size.  That way too if you have more Fender clearance than Wheel Well clearance you can favor one way or the other (If that makes sense).

Hope this helps anyone from making costly mistake of buying the wrong lips or barrels. Try it out and let me know if you like it.