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Old 06-24-2012, 11:20 AM   #5
lolife99
67-72 parts collector,…
 
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Join Date: Nov 2002
Location: Mid-MO
Posts: 22,675
Re: Measuring For Wheels Video,...

I used the above Car Craft article to design my own backspace tool.
I made one with the 5x5 Chevrolet truck bolt pattern and the 5x4.75 car pattern.
I also have one for the 6x5.5 bolt pattern for the 6-lug trucks.

The threaded rod represents the wheel width.
All threaded rod is 1" longer than the wheel width since wheels are measured from the actual tire "bead surface".
The outside-to-outside measurement of most wheels is approximately 1" wider in total width.
(a 20x8.5 wheel will actually measure 9.5" wide)
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Keith

Convert to disc brakes.
http://67-72chevytrucks.com/vboard/s...d.php?t=444823
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