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anyone knows how to measure backspacing on a wheel. i would need a 5" bs on a 20x8 rim right.
 

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to measure the bs, i think you lay the wheel face down. then get a straight edge and set across the wheel. measure from the back of the mounting surface to the bottom of that straight edge. on an 8" wheel, you'll want 5.5" of bs, which i doubt that wheel will have. but you should be fine as long as you run like a 245/40 tire.
 
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