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      11-15-2011, 02:04 PM   #1
IS350
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Help with chipping/cupping tires after 850 miles on my E92

Is this normal? Only easy driving until the 1200 mile brake-in.
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      11-15-2011, 02:51 PM   #2
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not normal, are you on stock suspension?
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      11-15-2011, 03:42 PM   #3
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Yes, all stock. Car is 1 month old. Should this be covered by Michelin or BMW?
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      11-15-2011, 03:46 PM   #4
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Agree, NOT normal. Start with your dealer.
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      11-15-2011, 04:13 PM   #5
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Thanks all,
This is from my local service manager. I've asked him for a regional service manager and/or Michelin contact. Any other suggestions? Thanks!

------Response to pictures from service manager:
I have seen that before and on my own vehicle. I was puzzled and can logically say that the rough surface of the road or loose gravel could cause the damage. It appears that the tires are being scraped by something.
Are these the front tires? Most of the scuffing on the edge of tires is caused while turning at slower speeds and the tires are giving you the traction to grip the pavement control the direction that you want the vehicle to travel. Sand also can cause traction loss that is rough on tires as well.
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      11-15-2011, 09:49 PM   #6
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If the tires are old, dried out
Would it have this effect on them ?
How long was your car at the dealer?
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      11-15-2011, 09:57 PM   #7
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I believe it was a May build, so unless the tires sat around at the plant, I'm not sure. Something doesn't seem right though.
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      11-16-2011, 05:22 PM   #8
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Definitely doesn't look normal. With a May build date, tire age should not be an issue. That wouldn't be normal even if the tires were 4 years old. It does look most like some sort of damage. Maybe cold temperatures making the compound a bit more 'brittle'? But I'm guessing now, I don't even know if it is cold where you are. Strange for sure.
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      11-16-2011, 08:02 PM   #9
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Quote:
Originally Posted by IS350 View Post
Thanks all,
This is from my local service manager. I've asked him for a regional service manager and/or Michelin contact. Any other suggestions? Thanks!

------Response to pictures from service manager:
I have seen that before and on my own vehicle. I was puzzled and can logically say that the rough surface of the road or loose gravel could cause the damage. It appears that the tires are being scraped by something.
Are these the front tires? Most of the scuffing on the edge of tires is caused while turning at slower speeds and the tires are giving you the traction to grip the pavement control the direction that you want the vehicle to travel. Sand also can cause traction loss that is rough on tires as well.
Well, I really don't understand this response. The tire wear shown did not come from "turning at slower speeds", or, traction loss from sand. I agree that it does not look like wear from an alignment issue, although you should have it checked. To me, assuming normal driving on normal road surfaces, it looks like a tire production problem.
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