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  #1  
Old October 13th, 2016, 01:52 PM
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Oscar
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Check my Offset Math

Ok, so I have 30mm spacers behind 16x7 +33et Boost alloys. I also have a set of P38 Mondials that are 18x8 +56et. In order to run the monorails they would require a very beefy 65mm spacer.

So:

Boost wheels are just about flush with the outer edge of my flares.

+33 et and a 30mm spacer makes the Boosts essentially a +3 et offset wheel.
+56 et and a 65mm spacer makes the Mondials essentially a -9 et offset wheel.

so this means that the Mondials will stick out an additional 25mm past my current wheels?

https://www.1010tires.com/Tools/Whee...et-Calculator#
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  #2  
Old October 14th, 2016, 12:58 AM
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Should look like this:

Click image for larger version

Name:	image-2527923352.jpg
Views:	47
Size:	241.5 KB
ID:	159734
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  #3  
Old October 14th, 2016, 06:33 AM
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Correct- gain the 12mm per your math plus the 13 from the added wheel width for 25mm total. However, the Boost for a Defender and the Mondials have a different bolt pattern. So, if you get adaptors to fit the Mondials, you may be able to compensate the difference, or part of it.
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Old October 14th, 2016, 08:17 AM
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Quote:
Originally Posted by don View Post
Should look like this:

Attachment 159734
That is sweet app Don! What is it?

Dale, I have the spacer adapter here. I'm not crazy about the design. It's at least a half inch thicker than needed to clear the flange bolts. I thought about making my own but my confidence in making a wheel adapter is low.
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Old October 14th, 2016, 08:51 AM
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Don Bunnell
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Quote:
Originally Posted by BlackField View Post
That is sweet app Don! What is it? Dale, I have the spacer adapter here. I'm not crazy about the design. It's at least a half inch thicker than needed to clear the flange bolts. I thought about making my own but my confidence in making a wheel adapter is low.
The app is called WheelAppPlus. It is really slick but I am not sure if it is still available.
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Old October 14th, 2016, 09:13 AM
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Very cool. I like that you can plug in the spacer info.
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Old October 14th, 2016, 10:19 AM
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Quote:
Originally Posted by BlackField View Post
That is sweet app Don! What is it?

Dale, I have the spacer adapter here. I'm not crazy about the design. It's at least a half inch thicker than needed to clear the flange bolts. I thought about making my own but my confidence in making a wheel adapter is low.
Oscar, just have a machine shop lathe them down??
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Old October 14th, 2016, 09:54 PM
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That's not really the issue. I'll snap some pics tomorrow. They just need a redesign. There is too much material to bridge the flange and provide a hubcentric centerpiece by ring.
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