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Old 06-06-2010, 12:29 AM   #2
westofb
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Join Date: Dec 2008
Location: Brookfield, MO
Posts: 601
Re: Backspacing, Offsetting, Backsetting, Offspacing, Backoff, Spacing Setting Confus

Back spacing is the distance from the back bolt face of the wheel to the rear wheel lip. Offset is the amount the back bolt face of the wheel is offset from the center of the wheel. 8" ralleys have 4" back spacing and their offset would be zero. I can't remember which is which off top of my head but postive and negative offset has to do with how much the bolt face (the are of the wheel that sits on the hub) is offset from center.
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