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Old 09-01-2009, 10:10 PM   #15
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Ummm, wait. I meant the tires were overinflated. The middle two treads wore faster than the outer treads. Ain't that overinflation?

Which is why I figured to reduce unloaded pressure from 45 to 40. Note that my inner tires look just fine, i.e. even tread.

Bruce [and Jenna plus Clancy the Australian Terrier]
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Old 09-01-2009, 10:23 PM   #16
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As I said, a strange problem. But I don't think lowering the pressure is going to solve it.
And, yes, wear in the middle inidicates overinflation.
I just can't feature what might be the cause.

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Old 09-10-2009, 08:40 PM   #17
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I also posted this question on the Diesel Forum Stop, this one Tread Wear.

In particular, this post.

Then, when I looked for info on rotation, I found guys with the same problem Dually Tire Rotation - Ford Powerstroke Diesel Forum.

My conclusion -
replace my outer duallies with the current front ones,
buy new ones for the front.
Try full pressure, 75/60 for all tires under all conditions.

Unless someone tells me something else .
Bruce [and Jenna plus Clancy the Australian Terrier]
2007 F350 DRW and 2007 Excel L33RSE
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Old 09-17-2009, 06:58 PM   #18
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I have the factory BFG All Terrain 17's on my F350 Dually and run 65 psi loaded and 50 psi unloaded, and all rear tires are wearing normally. I have experienced the front tires wearing more on the outside edge than inside of tire. Ford Service advisor says that the I beam suspension up front allows tire to run at a angle when in turns, therefore causing wear. Alignment checked out OK. He said that was just something we had to live with driving a Ford with this type of suspension. He also said for $149 they would break all the tires down and rotate. I decided it would be cheaper to run until failure. I do rotate the front tires.
Ron & Libby Gordon

07 F350 Dually Ford Diesel
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Old 09-17-2009, 08:17 PM   #19
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Ron I have found that running the fronts at 80psi helps reduce edge wear a lot. Ya, kinda rough riding on rough roads when empty, but I think it's worth it.

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