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Old 07-09-2006, 10:46 AM   #1
Slawson
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Unhappy Rear tire destruction

I have an '04 WRX wagon and it burned through the stock tires (with two rotations and a four wheel alignment) at 18k miles. Not to worry, I had already purchased a set of used Rota wheels and set of Goodyear Eagle F1 GS-D3 from Tire Rack that were sitting in my living room mounted and balanced at the time. I put them on and got another four wheel alignment.

Now I have 25k miles and flat Goodyear Eagle F1 GS-D3 with steel belts showing with all the wear in just the same place as the stock tire which had failed. The Kumho tires that were on the Rota wheels when I got them had the same wear patern.

I know there is a problem with the car that caused the steel belts to be exposed after only 7000 miles and the stock tires to wear through after so few miles with rotations.

The wear is on both rear tires near the middle of the car. Full tread on the outside of the tires, steel or holes on the inside.

How do I get this adjusted so this abnormal wear will stop?
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Old 07-09-2006, 11:12 AM   #2
Subie Gal
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when did you last get an alignment?

what are your settings?

Jamie
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Old 07-09-2006, 11:17 AM   #3
Slawson
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I got an alignment in late May, about 2000 miles ago. I have no idea what the settings are. I've never messed with alignment on anything.
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Old 07-09-2006, 11:17 AM   #4
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Quote:
Originally Posted by Subie Gal
what are your settings?
Bingo! Without knowing this, no recommendations can be made.
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Old 07-09-2006, 11:19 AM   #5
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Quote:
Originally Posted by Slawson
I got an alignment in late May, about 2000 miles ago. I have no idea what the settings are.
Any reputable shop will provide both pre-alignment and post-alignment specs. Something is seriously amiss with your alignment.
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Old 07-09-2006, 07:10 PM   #6
Patrick Olsen
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Sure sounds like the rear toe is completely out to lunch.

What, if any, suspension mods do you have done to the car?
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Old 07-09-2006, 08:24 PM   #7
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Quote:
Originally Posted by Slawson
The wear is on both rear tires near the middle of the car. Full tread on the outside of the tires, steel or holes on the inside.
If by the middle of the car you mean the inner edges, then the problem sounds like excessive toe out in the rear. For maximum tire life, get an alignment and have the toe zeroed out. Depending on how you drive you can also search for other suggestions for camber and toe. I run -2 front, -1.5 rear camber, zero toe all around.
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Old 07-09-2006, 08:27 PM   #8
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accidental double post
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Old 07-09-2006, 08:39 PM   #9
06STi
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What springs do you have? or how is it lowered?
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Old 07-09-2006, 11:41 PM   #10
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The likely culprit is rear toe. FYI: the toe in the rear should be 0.
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Old 07-10-2006, 12:29 AM   #11
06STi
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It may not be toe. Thats why I asked about springs or coil overs. and when doing burnouts, it mostly camber...

O.P. can you take a pic of your tires? and post them up?

free pic hosting at www.boosted-subie.com
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Old 07-11-2006, 07:07 PM   #12
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Quote:
Originally Posted by 06STi
It may not be toe. Thats why I asked about springs or coil overs. and when doing burnouts, it mostly camber...
Springs, coilovers, lowering your car doesn't effect tire wear if you get your car properly aligned. Toe kills tires a lot faster than camber. You also would not have just the inner edge of the tire wear to the belt. If it was camber you would see a larger area of the tire wear to the belt.
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Old 07-11-2006, 10:17 PM   #13
06STi
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Quote:
Originally Posted by tdxflex
Springs, coilovers, lowering your car doesn't effect tire wear if you get your car properly aligned. Toe kills tires a lot faster than camber. You also would not have just the inner edge of the tire wear to the belt. If it was camber you would see a larger area of the tire wear to the belt.

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Old 07-11-2006, 10:21 PM   #14
nhluhr
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tdxflex is right. toe is the real culprit most of the time.
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Old 07-11-2006, 10:24 PM   #15
06STi
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Quote:
Originally Posted by nhluhr
tdxflex is right. toe is the real culprit most of the time.

Without seeing a pic of the tires..... This thread is useless....
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Old 07-11-2006, 10:41 PM   #16
Paisan
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Quote:
Originally Posted by Slawson
The wear is on both rear tires near the middle of the car. Full tread on the outside of the tires, steel or holes on the inside.

How do I get this adjusted so this abnormal wear will stop?
Is that middle of the car or middle of the tire? If you mean the middle of the tire.... What pressures are you running?

-mike
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Old 07-11-2006, 11:24 PM   #17
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bottom line it sounds like you really need a new place to do your alignments.
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Old 07-11-2006, 11:32 PM   #18
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Quote:
Originally Posted by Turn in Concepts
bottom line it sounds like you really need a new place to do your alignments.
Agreed.

I like the "rear toe is out to lunch" comment (which is most likely right by the way.)

-Biggly
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