What is backspacing?
When buying wheels it is very important to determine proper backspacing. Backspacing is the measurement of how far in the wheel mounting surface is. This picture will help some. Backspacing will determine how far out the wheels stick. Proper backspacing will also allow you to clear things like springs and control arms at full turn. This post will further explain wheels and backspacing. Popular backspaces range from 4" to 3.5".
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