Backspacing and offset question - Ford Powerstroke Diesel Forum
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Old 08-15-2008, 08:26 AM
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Backspacing and offset question

I'm thinkin about gettin a new set of rims for my truck, but im not sure what offset and backspacing to get. I want the tires to sit under the truck as much as i can without serious rubbing, but i don't want it to look like a railroad truck either. Ive seen some trucks that have the almost the entire tire sticking out of the fender and it looks

So if i go with a 9" wide rim, what is the offset and backspacing i need? What about a 10" wide rim. And can i fit 13.5" wide tires on a 9" rim?
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Old 08-15-2008, 08:48 AM
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Old 08-15-2008, 09:55 AM
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On a 99-04 4x4 you want to try and stick around 4.5" of Backspacing.

So, with a 9" wide wheel that's -12mm of offset and with a 10" wide wheel that's -25mm of offset.

Yes, you can run 13.5" wides on a 9" wide wheel, 10" wide would be better.

As for rubbing.....what size tires and what size lift are you running/going to run (I see your sig mentions a 6.5" lift in the future)?
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Old 08-15-2008, 01:05 PM
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I plan on running 33 or 35 X 12.5 for now. The lift in stuff will be a while from now, like, at least a year. I plan on gettin a leveling kit untill then.
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Old 08-15-2008, 01:12 PM
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What would a -12mm offset on a 10" wide wheel end up like?
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Old 08-15-2008, 04:34 PM
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Old 08-15-2008, 04:59 PM
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read post #10 in my thread

http://www.powerstroke.org/forum/gen...nna-learn.html
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Old 08-15-2008, 06:08 PM
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Quote:
Originally Posted by cob32187 View Post
I plan on running 33 or 35 X 12.5 for now. The lift in stuff will be a while from now, like, at least a year. I plan on gettin a leveling kit untill then.
Quote:
Originally Posted by cob32187 View Post
What would a -12mm offset on a 10" wide wheel end up like?

-12mm offset on a 10" wide wheel is 5" of Backspacing. Will sit a little further under the truck vs. the 4.5" B.S. and get the tire closer to the leaf spring during turning.

With only a leveling kit on a 99-04 35/12.50s on 10" wides will most likely rub.
You'd be better off sticking with a 33/12.50
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Old 08-15-2008, 06:58 PM
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Quote:
Originally Posted by cob32187 View Post
I'm thinkin about gettin a new set of rims for my truck, but im not sure what offset and backspacing to get. I want the tires to sit under the truck as much as i can without serious rubbing, but i don't want it to look like a railroad truck either. Ive seen some trucks that have the almost the entire tire sticking out of the fender and it looks

So if i go with a 9" wide rim, what is the offset and backspacing i need? What about a 10" wide rim. And can i fit 13.5" wide tires on a 9" rim?
Jake! I know where you can get some 18 x 10" rims! PM me as soon as you can. Guess after seeing this thread, you are still thinking it over? Just let me know..................................
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Old 08-15-2008, 08:01 PM
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Quote:
Originally Posted by Hank View Post
Jake! I know where you can get some 18 x 10" rims! PM me as soon as you can. Guess after seeing this thread, you are still thinking it over? Just let me know..................................
Yeah, i made this because im just lookin at options, just so i know exactly what to look for on a new set just incase i decide not to buy the ones off you.
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