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General E46 Forum
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Old 09-01-2012, 09:02 AM   #1
maurer
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Tire wear, but alignment is good

Both front tires are starting to cup on the outsides. The insides are normal. I have had a recent alignment and the car drives straight as an arrow. The car does have 108k miles, bought the car used about 10k miles ago so I'm assuming some suspension is in order. Front control arms, ball joints and bushings were replaced right after i bought it. Could it be something else I'm missing? If it is the struts, is there anything that goes along with them that I should replace as well?
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Old 09-01-2012, 09:26 AM   #2
bratliff
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It could be shocks. Also check your tire pressure and use the plate on the driver's door jamb to determine proper psi. Did you have the tires balanced when the car was aligned? Cupping tends to indicate the tire is bouncing which should be shocks or out of balance.
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Old 09-01-2012, 10:18 AM   #3
yetiinimolazhp
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If alignment is good, then I would suspect low psi in tires.
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Old 09-01-2012, 10:40 AM   #4
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Is is cupping or wear?

Cupping could be tire design and/or a suspension issue.

How many miles on the tires? Brand and model of tire?

Google the tire brand and model and it will tell you a lot if the tires are subject to strange wear, there will be many complaints on many models.
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Old 09-01-2012, 11:07 AM   #5
doggy
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just because your car goes straight doesnt mean alignment is good - do you have a printout of your alignment specs? excessive toe in or not enough camber will cause outer tire wear. what brand did you replace the control arms,tie rods and bushes with? if not meyle or lemforder then they are likely worn and need replacing and could also be responsible for outer tyre wear.
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Old 09-01-2012, 11:18 AM   #6
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If you have wear on both the inner and outer edge of the tire than the tire pressure is too low.
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Old 09-01-2012, 11:24 AM   #7
shanneba
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http://www.procarcare.com/includes/c...dtirewear.html

Cupping
Cups or scalloped dips appearing around the edge of the tread on one side or the other, almost always indicate worn (sometimes bent) suspension parts. Adjustment of wheel alignment alone will seldom cure the problem. Any worn component that connects the wheel to the car (ball joint, wheel bearing, shock absorber, springs, bushings, etc.) can cause this condition. Worn components should be replaced with new ones. The worn tire should be balanced and possibly moved to a different location on the car. Occasionally, wheels that are out of balance will wear like this, but wheel imbalance usually shows up as bald spots between the outside edges and center of the tread.
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Old 09-01-2012, 09:07 PM   #8
maurer
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Quote:
Originally Posted by yetiinimolazhp View Post
If alignment is good, then I would suspect low psi in tires.
If low psi in tires it would be wearing on both inner and outer
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