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TIRE WEAR ????????

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Old Nov 7, 2011 | 04:33 AM
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TIRE WEAR ????????

I have 285/75/16's on truck the rears seem to wear out in the center. I have tried diff air pressure in them but still no diff the fronts wear perfect . The tires are D's and i run 55 psi front and was running 50 in rear now 47 still wear out center. I have stock rims could this be the problem, do i need wider rims.
 
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Old Nov 7, 2011 | 04:46 AM
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Middle wear means the air pressure is too high and the tires are only running on the center.
 
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Old Nov 7, 2011 | 04:57 AM
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Yea i kinda know that but how low can i go on pressure . Do you think a wider rim would help.
 
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Old Nov 7, 2011 | 05:26 AM
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I don't know about the "D" range tires pressure wise. The rim width should be on the rim itself and if your truck came with the narrower tires from the factory the rims could be too narrow, I suppose. See if you can find it stamped on the inside of the wheel and post it up. I am no tire/rim expert for sure--LOL.
 
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Old Nov 7, 2011 | 10:39 AM
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I would think if it were rim width related, you'd be seeing the same issue with all four, not just the rear, and I would think it would be more prevalent on the front where you're typically carrying more weight.
 
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Old Nov 7, 2011 | 11:35 AM
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X2 on tire pressure. Optimum tire pressure (unloaded) varies widely, especially on the rears. Do you know how to do the chaulk test?
 
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Old Nov 7, 2011 | 12:27 PM
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I definitely think rim width has an effect, although I don't see why its only happening on your rear tires. FWIW I have a 12.50 tire on a 12" wide rim and my wear is even on the inner, outer, and middle of the tread on all 4 tires.
 
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Old Nov 7, 2011 | 06:13 PM
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Well i am running a 7.5 inch rim with a 11.00 tire , and 45 psi in the rear D's max out at 65 psi.
 
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Old Nov 7, 2011 | 06:37 PM
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My tires did this too and they were "D"s. The tire said 50 psi but that roasted the centers fast. I dropped em by 5 psi a few times. And finally ended up at 40 psi for the rears. That stopped the wear in the back. I put the front at 45 psi but the full 50 would have worked i think.
 
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