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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 03-12-2011, 08:06 AM   #1
chardagha
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Join Date: Sep 2010
Location: SoCal, USA
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My Ride: 330Ci convertible
unusual front tire wear?

On Sunday, I had a "decompression event" involving my r/f tire (p225/45 zr17 Michelin Pilot AS) while travelling at 75 mph+ on a SoCal freeway. The only indication the tire was flat was a slight rattle at the cowl and a passing driver pointing at my wheel. After getting over to the shoulder, I had travelled perhaps 1/2 - 3/4 mile on the flat. When AAA arrived and changed out the tire, I saw that the tread across the face of the tire was good, but the inside shoulder was worn through to the cord and belts. I made it home on the doughnut spare and had 2 new ContiExtreme DWS's mounted yesterday. When the tech pulled the l/f wheel, I saw the same extreme wear pattern on the inside shoulder and this tire was ready to go at any time. HELP!! Has anyone seen/experienced this type of extreme treadwear? The pattern would indicate a de-camber situation, but the wheel appears to make full contact with the surface across the face of the tread. I am taking her in for a 4-wheel alignment on Mon., but shoud I be concerned about anything else...control arms/bushings? Thanks in advance,
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Old 03-12-2011, 09:47 AM   #2
tootall
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The alignment should reveal control arm or other issues. If you still have Michelin Pilots on the rear, it is not desirable to mix tire brands. All four tires should be the same brand and model.
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Old 03-12-2011, 09:59 AM   #3
shanneba
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Location: Indiana
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They should check all the suspension parts prior to performing an alignment, and should advise replacement before completing the alignment.
Read up on alignment here- go to the bottom of the page and watch the inside shoulder wear. Excessive toe is normally more of a cause of inside tire wear than camber on E46s.
Excessive negative camber could result from lowering your car.

http://www.hunter.com/videos/index.cfm?cat=2
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Old 03-12-2011, 10:03 AM   #4
92luder
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I had this same problem and it came to be bent struts. So I replaced them and got an alignment.
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