20x9" wheel 0 offset? - Ford Powerstroke Diesel Forum
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Old 11-25-2010, 07:30 PM
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20x9" wheel 0 offset?

Wondering how far these wheels stick past the fenders i know a few guys run them and want to see if all the widths add up seems like some wheels with the same size and offset sit different on some trucks atleast it looks that way to me. some charts say 2.25 and some say 2.75 and so on!
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Old 11-29-2010, 08:38 PM
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I run a 20x9" Ultra wheel with a 5" backspace and 0 offset on my stock height 2010 F350 with the stock 275/65r20 Goodyear tire and they are maybe 1/2" outside the fenders and don't rub anywhere. Ran a 295/65r20 on the same wheels with stock height on my 2008 F250 truck and they were about an inch out of the fender and rubbed on the inner fender liner at the back at full turn.

2008 truck at stock height, 295/65r20

Same truck with 4" blocks in rear and Icon 2.5" level kit up front

2010 truck at stock height, 275/65r20

Last edited by RockinJW; 11-29-2010 at 08:44 PM.
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Old 12-09-2010, 01:35 PM
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Hi Chris,

The stock offset on 2008-2010 Super Duties is +40mm (6.07" BS).

a 20x9 wheel with a 0mm offset will have 5" of BS, meaning the wheel will stick out an additional 2.07" compared to the stock wheel (1.07" reduction in backspacing and 1" wider wheel).

If we also add a wider tire, for instance 37x13.50R20 Toyo MT compared to a 275/70R18 stock tire, you will net an additional 0.59", meaning the tire will stick out a total of 2.66" beyond the stock tire.
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