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Old 05-10-2006, 08:26 PM   #1 (permalink)
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Default Control arms, What exactley do they do?

I just got my tein s techs. And was wondering whay exactley control arms would do for me. I have been told i need them but never why. Thanks, Jared
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Old 05-10-2006, 08:32 PM   #2 (permalink)
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Default Re: Control arms, What exactley do they do?

sounds like your talking about adjustable control arms. considering you already have control arms, which is what your steering knuckle pivots on and for suspension travel. some people say you need them on 2G's for alignment. it's to get the camber/alignment adjustments back in spec, although after lowering your car i dont think it'll ever be the same pretty sure adjustables are for the rear....hope this helps

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Old 05-10-2006, 08:34 PM   #3 (permalink)
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Default Re: Control arms, What exactley do they do?

The stock control arms are not adjustable; you adjust camber by turning the cam bolt on the lower arm. The range of adjustment is small.

when you lower the car, you alter the suspension arm angles such that you have a lot more negative camber than you should have (this is an oversimplification, but anyway).

Adjustable control arms allow you to force the rear knuckle into a more upright position, thereby getting your rear camber in spec.

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Old 05-10-2006, 08:35 PM   #4 (permalink)
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Default Re: Control arms, What exactley do they do?

Ya thats what i meant. But so the tire wear will be really fast right.
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Old 05-10-2006, 08:36 PM   #5 (permalink)
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Default Re: Control arms, What exactley do they do?

The rear tires will wear prematurely on the inner edge and your car will be more prone to understeer.

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Old 05-10-2006, 08:42 PM   #6 (permalink)
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Default Re: Control arms, What exactley do they do?

the most critical tire wear angle is toe...my camber is about 1.5 degrees negative in the rear and i think a little more in the front from lowering my car with intrax. i havent had any problems with inner tire wear to this day....just keep up on rotating your tires! hahaha
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Old 05-10-2006, 08:48 PM   #7 (permalink)
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Default Re: Control arms, What exactley do they do?

Quote:
Originally Posted by TuRbO3K
the most critical tire wear angle is toe...my camber is about 1.5 degrees negative in the rear and i think a little more in the front from lowering my car with intrax. i havent had any problems with inner tire wear to this day....just keep up on rotating your tires! hahaha
Primary reason for avoiding excessive negative camber in rear is tendency to understeer anyway. 1.5 degrees neg. camber is fine if running 2.5-3 in front.

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Old 05-10-2006, 09:00 PM   #8 (permalink)
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Default Re: Control arms, What exactley do they do?

Quote:
Originally Posted by jrod
I just got my tein s techs. And was wondering whay exactley control arms would do for me. I have been told i need them but never why. Thanks, Jared

I have some for sale... take a look at this thread:

http://www.3si.org/forum/showthread.php?t=328154

If you want to see what your tires will look like WITHOUT them, take a look here:

http://www.fatsurfer.com/3si/forsale/badcambersized.JPG

Take a look at the top tire, and the second tire down in particular... notice how only one side of it has tread left Read my thread, there's some good info in there... and the control arms are still for sale if you'd like them.
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Old 05-10-2006, 10:04 PM   #9 (permalink)
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Default Re: Control arms, What exactley do they do?

Looks like i will be getting some then. And joshanker thats a really good deal but these are for my vr-4. Thanks for all the input guys.
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Old 05-11-2006, 02:38 PM   #10 (permalink)
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Default Re: Control arms, What exactley do they do?

you can make your own for about $105
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