GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

Tire Cupping - Inner Tire Wear HELP!!! PICS

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Old 12-07-08, 08:55 PM
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iposthere
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Default Tire Cupping - Inner Tire Wear HELP!!! PICS

Hey,

I have searched the forums for Cmaber kits (like RCA, ect) but I still haven't found something that will fix my problem.

Problem: Front Inner Tire wear. This time it was somewhat a curved inned wear, like a quarter pipe (instead of a straight angle wear).

My Setup:
Ibach Springs (1.5" drop i think)
Bilstein Sport Shocks (just got these put in 4 months ago, was using stock shocks before that)
18" rims (tire size225/40/18")



How can i fix this? I have gotten a lot of alignments and keep going through tires.

Last edited by iposthere; 12-17-08 at 06:42 PM.
Old 12-07-08, 08:59 PM
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AYEmike
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whats your camber at.
Old 12-07-08, 09:07 PM
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lexusscturbo
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Are you running low on air?
Old 12-07-08, 10:25 PM
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iposthere
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The camber I was at last time was about 0.9% camber on the front left (the tire that is worn) and 0.3% on the front right.

The PSI i have on my 225/40/18 tires is 33-34psi. (it hasnt gone below 30psi when i've checked, but i normally try to keep it around33-34psi).
Old 12-07-08, 10:49 PM
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kit cat
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Originally Posted by iposthere
How can i fix this? I have gotten a lot of alignments and keep going through tires.
I was about to say have your toe checked...but if you keep on going through even with an alignment, maybe a suspension component is messed up.
Old 12-07-08, 11:20 PM
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jacksonvp
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What is your Toe at on the alignment printout? Camber is going to gradually wear the tire unless you are running extreme camber (lifting the outside of the tire status). The convex style of wear would have more to do with the belt edge and sidewall construction.

Cupping is a different condition where most commonly the tread angles back in early stages and then begins to deform greatly if unchecked.

Last edited by jacksonvp; 12-07-08 at 11:23 PM.
Old 12-07-08, 11:53 PM
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Debonair
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Originally Posted by jacksonvp
What is your Toe at on the alignment printout? Camber is going to gradually wear the tire unless you are running extreme camber (lifting the outside of the tire status). The convex style of wear would have more to do with the belt edge and sidewall construction.

Cupping is a different condition where most commonly the tread angles back in early stages and then begins to deform greatly if unchecked.
That looks more like a camber issue then cupping. What are the specs? have all your alignments been performed at the same shop?

Cupping:
Old 12-08-08, 12:21 AM
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kit cat
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Originally Posted by Debonair
That looks more like a camber issue then cupping. What are the specs? have all your alignments been performed at the same shop?

Cupping:
I doubt its camber like jacksonvp and myself said. Most likely toe, but if the OP went through few alignments, then I would suspect its the suspension itself.
Old 12-08-08, 12:49 AM
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chrispy
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Is your car high mileaged? When your caster arm bushing goes bad your toe will change no matter how many times you align it. You can try going with Daizen or TRD bushings, or buy new caster arms.

This kind of stuff worries me because of the stress I put on my suspension.
Old 12-08-08, 12:59 AM
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pingu
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Eibach's drop 1" iirc.
Old 12-08-08, 07:25 AM
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jacksonvp
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If you are only on springs, I would probably take it back to the alignment shop and have them push down on your car and see how the suspension read outs react. As you drive and the suspension loads and unloads, more than just camber will change with the angle of the suspension arms. So perhaps its only an issue when the suspension is loaded, and the tires toe outward and scrub the inside very hard? What allignment shop are you taking it to? This is where the midas style places lose their touch and you're better off taking it to a quality shop.
Old 12-08-08, 09:19 AM
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ElitistK
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werd. castor bushing also goes out every 60k miles.
Old 12-08-08, 05:46 PM
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go get an alignment at a proper place. with printout so u can know the specs
just so u know, even after the alignment, your tires will still be in that condition. its not going to stop cupping.
Old 12-08-08, 07:09 PM
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PHML
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mild drop....major camber problem...looks like an alignment issue.

SS (RCA) kit won't help in this case since your on springs/shock setup. you need coilovers to adjust back up to compensate for the SS kit drop.
Old 12-08-08, 07:50 PM
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iposthere
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Hi Everyone,

Thanks for all the responses.

I took it to a tire shop (Tire Pros), they have done pretty much all my alignments. They gave me a printout of my alignment and everything was in the green (i'll get it tomorrow and post the stats). They said when i took it back that it wasn't much adjustment needed. But i always seem to have this inner wear problem.

My car has 120K miles on it.

Do you think this is a Bushing problem then?

Thanks again for all the help!


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