Backspacing - Ford Powerstroke Diesel Forum
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Old 01-08-2011, 09:00 PM
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Backspacing

how much backspacing would i need on new wheels to get my tires to stick out alittle, my truck has 275/65/20 in tires with stock wheels, and bushwacker flares
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Old 01-09-2011, 09:30 AM
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Stock offset is +40mm. 25.4mm to an inch, so determine how much you want them to move out and subtract it from +40. On stock height and stock tires I wouldn't go much further than +10mm offset, which would move out about 1.2".
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Old 01-09-2011, 11:36 AM
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Here is mine with 0 offset and 5.00" Backspace. Wheel size is 20" x 9".
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Backspacing-dsc00282.jpg   Backspacing-dsc00286.jpg   Backspacing-dsc01883.jpg  
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Old 01-09-2011, 12:15 PM
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how wide r those tires!!?? i didnt know a 0 offset would stick out that much..looks real good
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Old 01-09-2011, 12:26 PM
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Tires are: 305/55-20 (33" x 12.50"-20)
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Old 01-09-2011, 12:32 PM
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i always thought i needed a 17x9 with a -12 and 4.5 bs for them to stick out but u have 0 and 5 bs..interesting
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Old 01-09-2011, 01:22 PM
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I have 20x9" +14 offset which is 5.5" backspacing and they stick out about 1.5" past the fenders with 325/60/20's.

Chris
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Old 01-09-2011, 01:55 PM
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well the options for the addicts are

-12 offset and 4.5in backspace

18 offset and 5.71in backspace

Which of these would stick out further?


also the diesels im looking at are -24mm offset and 4.56 backspacing, they are used, what if i got the diesels and had them color matched to the truck color?
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Last edited by dommel01; 01-09-2011 at 02:01 PM.
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Old 01-09-2011, 02:15 PM
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Quote:
Originally Posted by Stroke4Fun View Post
I have 20x9" +14 offset which is 5.5" backspacing and they stick out about 1.5" past the fenders with 325/60/20's.

Chris
Crap good thing I didnt buy new wheels already. Maybe the mickey thompsons will work.the 6.0 and 6.4 have the same axles right?
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Old 01-09-2011, 02:31 PM
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Quote:
Originally Posted by bwillis2003 View Post
Crap good thing I didnt buy new wheels already. Maybe the mickey thompsons will work.the 6.0 and 6.4 have the same axles right?
2005 and newer all have the same axle. The axle is slightly wider than the one used on 1999-2004 trucks. This is why the older trucks can run a deeper dished wheel (4.50" backspace) and the tires only stick out about an 1". Where the newer trucks a 5 backspace with a 20" x 9" wheel sticks out on the front end 2".
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