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Old 02-22-2013, 03:58 PM
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Join Date: Jan 2011
Location: NC
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Vehicle: 2004 Dodge Ram 1500 4X4
Trim Level: Sport quad cab
Color: Bright Silver Metallic
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
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-18 offset should be plenty enough to clear 12.50's without rubbing. If you stick with a 9" rim you are basically moving the rim and tire out from under the truck about 1.4". That combined with the 12.50" wide tire will definitely make it stick out. As for the's basically a product of the offset and width. If you already know the offset and width that you want, then you don't need to worry about the backspacing. If you stick with a -18 offset then the only way to change the backspacing is to change the rim width. Make sense? Hope this helps.
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