IS - 1st Gen (2001-2005) Discussion about the IS models up to the 2005 model

is300 bumpsteer

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Old 12-27-15, 03:49 AM
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GeenIdee
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Hey guys,

My is300 is lowered on a set of BC racing coilovers and since then i've got bumpsteer, especially from the rear.

Do I need adjustable rear toe arms to reduce this (I expect I can't remove this completely)?
Old 12-30-15, 09:23 AM
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jadu
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usually this is caused by worn bushings and ball joints.
Old 12-31-15, 03:05 AM
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GeenIdee
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I could have a second look at that but i'm not quiet sure it is the cause.

I can't remember but my rear toe allignment might not be perfect and when i go over a bump on the highway you can feel the rearend move sideways and back a little.

I did had a quick look at the toe arms and they can be compared with what you have on the front. The thing is, the ball joints are fitted downwards into the hub instead of upwards. So I can't simply lower the ball joint like they usualy do with a bumpsteer kit.

If I would be able to turn it around 180 degrees to fit it upwards into the hub, it might be solved but I expect it is a conical fitment at the ball joint like usual.


Anyway, I will double check for any worn bushings and things, until that I really think the cause is with the toe arms being angled instead of horizontal because the car is lowered.

Thanks, and I'll post results when I checked it
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