S2000 Under The Hood S2000 Technical and Mechanical discussions.

Rear feels 'unbalanced' at corner

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Old Nov 26, 2004 | 09:50 PM
  #1  
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Default Rear feels 'unbalanced' at corner

my car just had a full alignment 3 days ago, also the rear tires has been freshly replaced.
Just before the alignments, the ride was somewhat dangerously 'wiggly' around medium corners at speeds around 130-140 KM/H. The steering wheel also feels 'light' like oversteer in the middle of corners. ( don't know how to describe that )

After the alignments, the car feels a bit 'wiggly'/unbalanced, but not as hard as before. This happens most during right corners.

Any ideas to what might have cause this? Is there any reason why the front Casters are in different values?

My present alignment:

Front Left: camber -0.29, Caster 6.29, Toe 0.03
Front Right: camber -0.29, Caster 5.10, Toe 0.03

Rear Left/Right : camber -1.18, toe 0.14

Thanks
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Old Nov 27, 2004 | 12:55 AM
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Looks like you have very little camber on both the front and rear of the car.

The caster can very to some degree but I think that is an excessive variance.

Your front toe is almost zero. Is this in or out? It shouldn't cause a problem anyhow.

I assume your rear toe is in. (obviously) I think it could use more toe in on the rear. It should be be closer to .25 toe in on the rear for stability.

Other than your S having very little camber all the way around and the rear possibly needing more toe in, your caster looks a little bit out of wack.

Who aligned your car? You should look at the specs in your owners manual and show it to the alignment technician. It shows the proper alignment specs. I don't have mine handy but I don't think this is correct.
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Old Nov 27, 2004 | 01:35 AM
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Thanks for the info,

I had my alignment done by some specialize tire shop, which has a reputable sound. Though, they never set a S2000 before ( VERY few s2k here in my country ) and my S (used from Japan) doesnt comes with the owners manual .

Anyone else wants to chime in about the alignment settings? That would be great

Thanks
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Old Nov 27, 2004 | 07:08 AM
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any idea as to the stock 04 camber. front and rear.
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Old Nov 27, 2004 | 08:18 AM
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Also, What tires do you have front and rear and what size are they.
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Old Nov 27, 2004 | 10:59 AM
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[QUOTE=CoralDoc]I have had my car aligned about every other year (20k miles) and have found that the S2000 holds alignment pretty well. That said,
it's important to have the car aligned to the specifications that you want since alignment has a lot to do with the way the car performs and the way
the tires wear.

For optimal tire wear it's important to run a small amount of toe in. That, more than camber reductions, reduces wear. As an example, I run my car at
the maximum camber front and rear (-1.7 deg. rear and -0.7 deg front) and run minimal rear toe (0.32 deg total toe in) and near zero front toe
(0.04 deg total toe in).
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Old Nov 27, 2004 | 03:15 PM
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Originally Posted by davepk,Nov 28 2004, 01:18 AM
Also, What tires do you have front and rear and what size are they.
Fronts: S-02 205/55/16
Rears: Falkens 245/45/16

thanks
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Old Nov 27, 2004 | 04:35 PM
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Don't recommend mixing tire brands/models of tires. If you had less grippy tires on the rear, I'm not surprised that the back end felt wiggly. The fronts would still grab while the rears start to slide. Fresh rubber helps, but the new Falkens are probably still not as good as old SO2's. Of course this depends on which Falkens you are talking about.
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Old Nov 28, 2004 | 12:22 AM
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[QUOTE=RACER,Nov 28 2004, 03:59 AM] [QUOTE=CoralDoc]I have had my car aligned about every other year (20k miles) and have found that the S2000 holds alignment pretty well. That said,
it's important to have the car aligned to the specifications that you want since alignment has a lot to do with the way the car performs and the way
the tires wear.

For optimal tire wear it's important to run a small amount of toe in. That, more than camber reductions, reduces wear. As an example, I run my car at
the maximum camber front and rear (-1.7 deg. rear and -0.7 deg front) and run minimal rear toe (0.32 deg total toe in) and near zero front toe
(0.04 deg total toe in).
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Old Nov 28, 2004 | 01:38 AM
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these are factory UK specs.
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