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Old 06-07-2008, 11:04 AM   #1
Scooby Specialist
Member#: 156229
Join Date: Aug 2007
Chapter/Region: MAIC
Location: Baltimore
Default Suspension = bad tire wear?

Hello Guys,

Last year I purchased a 05 WRX with 54K miles on it. At 59K I put Cobb springs and got a alignment done. The struts have no bouncing problems and are working fine. Due to some major bodyl damage my car is currently being repaired. The shop informed me that my back rear tires are bald on the inside. I am assuming that this damage was done cause of the springs and not from the previous owner.

So, I will be putting a new set of tires on but I want to avoid uneven tire wear with this set. Is this just some kind of allignment setting with Toe and Heal? or is this more of a camber problem that would require additional suspension pieces like camber bolts? Any suggestions or ideas are greatly appreciated.
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Old 06-07-2008, 11:27 AM   #2
Patrick Olsen
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Join Date: Jul 1999
Chapter/Region: AKIC
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1997 Legacy 2.5GT
1996 Impreza coupe


It's most likely a toe problem. Where did the shop set the toe when they did the alignment at 59k? (BTW, there is no heal, nor any heel, when it comes to alignment. ) As long as run 0 toe front and rear you should have little to no issues with uneven tire wear, even running as much as -2deg camber or more.

With that said, it might not hurt to get some camber bolts for the rear to reduce the negative camber some. The cars come with quite a bit of rear camber from the factory, and adding lowering springs will just increase that. IMO you want to be in the -1 to -1.5 range in the rear, and I'd bet you've got more than that. Again, that additional camber should not cause abnormal tire wear assuming your toe is set right, but that extra negative camber will shift the balance towards understeer.

Pat Olsen
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