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Old 07-02-2004, 03:03 AM   #1
Ken-gv
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Default Uneven wear on outside of passenger side tires

Hi,

I just noticed that the outside of both passenger side tires have wear.

It is just on the outside, not both sides which would suggest low air pressure.

I keep them at about 32 PSI front and rear, at the suggestion of the dealer to quieten some of the front end ride noise.

I think I will try 34 tomorrow and see how that goes.

But, does anyone have any suggestions on why tires would wear on the outside of only the passenger side tires??

PS The tires are Michelin Pilot Sport A/S 205/55-16 and I do normal WRX driving in a wonderful curvy foothill country, some freeway driving, but mostly double lane mountain stuff, no racing.

Thanks
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Last edited by Ken-gv; 07-02-2004 at 03:30 AM.
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Old 07-02-2004, 07:55 AM   #2
Scooby Freak
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Sounds like the toe settings might be off. When the toe is misaligned, it tends to scrub the edge of the tire.

Have you had an alignment lately?
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Old 07-02-2004, 11:57 AM   #3
Ken-gv
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No, I have not had an alignment since I put the tires on some 20,000 miles ago.

This wear has only happened since my last rotation, maybe 7,000 miles ago.

I will get the tires aligned and rotated.

Maybe also switch sides, as I read in another thread, so the good tread is on the outside.

Funny that both passenger side tires would show the wear.

Thanks for the suggestion.
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Old 07-02-2004, 06:02 PM   #4
Kostamojen
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Its the suspension you need aligned, not the tires. But toe is what usually causes bad wear like that.
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Old 07-02-2004, 06:42 PM   #5
Ken-gv
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Quote:
Its the suspension you need aligned, not the tires.
Yes, my mistake to say tire alignment, rather than wheel alignment or as you say, suspension alignment.

Thanks
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Old 07-02-2004, 08:56 PM   #6
Uncle Scotty
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Sounds like not enough pressure and too many hard left turns, to me.... ....
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Old 08-12-2004, 09:16 PM   #7
Ken-gv
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I just got my alignment performed and wanted to report what they found.

Left Front wheel was 7/32" and should have been 1/16".

Right Front was 1/32" and should have been 1/16".

Left Rear was 11/32" and should have been 1/16".

On my old set of tires, the outside of both Left tires wore much more than the other tires.

So, the alignment figures are a little confusing to me.

The alignment mechanic said that with the Left Front being so far out, it would cause me to steer a little left to compensate so the outside of the Right tires would wear faster.

Interesting. Does this line up with what others know about alignment and tire wear?

I am going to keep a much better eye on wear and get them rotated a lot sooner and hope I get more than 27,000 miles.
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Old 08-12-2004, 10:14 PM   #8
Uncle Scotty
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Your numbers are meaningless in the context you have related them.
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Old 08-13-2004, 01:40 AM   #9
Ken-gv
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Hmm, thanks for your reply.

I am not sure I can make them more meaningful.

I have this print out and if the numbers don't mean anything, then the Left Toe (both Front & Rear) was pretty out, the Right Toe (both Front & Rear) was pretty close.
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