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Old Dec 30, 2007 | 09:24 PM
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pyroe4
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Tire sizes

I just bought a 99 550 4x4 and I am trying to find out how big of a tire I can put on the stock rims before the duals rub together, Can't have that, I carry too much weight. It has 225/70-19.5's on it now.
 
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Old Dec 30, 2007 | 11:00 PM
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blueknightcrew
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I'm going through the same thing with my 2000 f550. All the searching and posting that I've done come back as we are stuck with the stock size, unless we buy the 6 3/4 rims.

That's what I come up with let me know if you come up with anything different.

Good luck,Ron
 
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Old Dec 31, 2007 | 11:01 PM
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Thanks for the info, If Ifind anything out I'll let You know.
 
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Old Dec 31, 2007 | 11:30 PM
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blueknightcrew is correct in his research. The stock/factory 6" wide wheel limits you to a 225/70R19.5 as the largest tire. If you want to run a bigger tire (245, 265, etc.) safely you will need a wider wheel.
 
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Old Jan 1, 2008 | 10:35 PM
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Thanks, I guess that gives Me that excuse to buy some aluminum wheels. If I can afford them!!!
 
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