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Old 10-09-2011, 09:47 PM   #1
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Goodyear wrangler tire wear question

I'm starting to get a WAWAWAWA noise from my front tires, vibration at high speed(over 60mph) and the wear on the tire is something I have never seen. The side treads are normal and smooth while the center are uneven ( each tread on the same row ends lower than the next) before i bring it in I would like some advice.
All direction parts look normal but i still didn't get time to take the wheels off for thourough inspection.

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Old 10-09-2011, 10:01 PM   #2
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center wear is usually too much air, how many psi do you have in them

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Old 10-09-2011, 10:08 PM   #3
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I'm at 34psi. Both tires show the same wear. The wear is hard to describe. If you run your hand from front to back you feel the next tread higher than the one previous. Tire pressure is checked every 2 weeks and is stable.
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Old 10-09-2011, 10:35 PM   #4
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What size tires? Rotated regularly?
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Old 10-09-2011, 10:47 PM   #5
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I know exactly what you are describing, each of the lugs tops are sloped. I just rotated my tires and noticed the exact same thing. I assumed it was from not rotating them soon enough and the front getting worn that way from being the front steering wheels, ie being turned and getting worn from steering. I could be wrong so if anyone out there has an idea of what this could be I would be interested as well.
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Old 10-09-2011, 11:02 PM   #6
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It's called cupping (it isn't, but that's what category a mechanic will put it in, because it's gotta be a problem, and has to fit a category...), and it's fairly common with off road tires on 4WD vehicles. It's NOT a bad suspension or alignment (tire shop guys are going to tell you that... trust me) but more a matter of having a lot of soft tread under a flying brick... bounce causes it mostly. As long as it's in the middle, and it isn't severe or weird (as in every third lug is cupped, or they cup to the ouside, etc.), then you should just plan to rotate more often, and make sure all tires swap sides somehow (so the cupping direction is reversed). I've seen it on a bunch of 4WD vehicles of all different types and weights, but only on larger, wider, "large lug" type tires...
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Old 10-10-2011, 03:45 PM   #7
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After I rotated my tires the sound was bad but now that's its been a month and a half its going away so I assume its getting worn back even. Thanks for the explanation.
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Old 10-10-2011, 08:02 PM   #8
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Thanks guys,
the tires had not been rotated in the last year. I'll do a cross rotation (front to back, right to left)...something to keep me busy on non hockey nights!!
Thanks again for the responses and expertise.
I'll keep you posted on how it turns out.
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Old 10-13-2011, 01:51 AM   #9
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Quote:
Originally Posted by aelwero View Post
It's called cupping (it isn't, but that's what category a mechanic will put it in, because it's gotta be a problem, and has to fit a category...), and it's fairly common with off road tires on 4WD vehicles. It's NOT a bad suspension or alignment (tire shop guys are going to tell you that... trust me) but more a matter of having a lot of soft tread under a flying brick... bounce causes it mostly. As long as it's in the middle, and it isn't severe or weird (as in every third lug is cupped, or they cup to the ouside, etc.), then you should just plan to rotate more often, and make sure all tires swap sides somehow (so the cupping direction is reversed). I've seen it on a bunch of 4WD vehicles of all different types and weights, but only on larger, wider, "large lug" type tires...
+1 Hit the nail on the head.

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