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Old 09-18-2013, 12:28 AM
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hemitrx4 hemitrx4 is offline
Dodge Ram Forum Senior Member
Join Date: Jul 2010
Location: Wainwright, Alberta
Posts: 128
Gender: Male
Vehicle: 2008 Dodge Ram Quad Cab
Trim Level: TRX4
Color: Black Crystal Pearl
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
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Ok, here`s what I don`t understand. I squeezed in my wheelwell and measured the clearance between the sidewall of the tire and the spindle and it`s approx. 3/4" and about the same between the tread and the upper ball joint. So with the factory 20" rims wouldn`t the extra inch of backspacing make the rim almost rub on the spindle. I`m looking at 20x10 rims and I just don`t get how it seems that a bigger rims and more backspacing than my 17" wheels adds up to more clearance for wider tires. Going by my math for 20x10 rims I`d need 4.5" backspacing max for a 12.5" wide tire. I just don`t want to order and get stuck with the wrong wheels.
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