What is backspacing?

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Sep 5, 2011 | 05:09 PM
  #1  
Which rims will stick out the most on my 4runner between the two? On a 15 x8 rim a back spacing of 3.75 or a back spacing of 3.25?
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Sep 5, 2011 | 06:18 PM
  #2  
Let me help you help yourself. http://www.4crawler.com/Diesel/Tires.shtml#WHEELS Stock is 4.5" FWIW
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Sep 5, 2011 | 06:19 PM
  #3  
3.25 will stick out further than 3.5.



As this diagram shows, the higher the number on the backspacing, the further outboard the wheel center is.

3.25" will poke out quite a bit.
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