IS F (2008-2014) Discussion topics related to the IS F model

Bumpy ride when steering wheel turned all the way - 2008 IS F

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Old 12-10-13, 04:26 PM
  #16  
rmillsISF
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My is350, my friend's IS350 and this wife's and ISF do it. it's in the geometry of the steering. I thought balljoints at first, but it's just that the car turns so sharp mixed with the geometry...

Last edited by rmillsISF; 12-11-13 at 05:41 PM.
Old 12-10-13, 10:52 PM
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lobuxracer
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Outside edge wear is a bad alignment. Inside edge wear is common but can be addressed with a bushing change or a very specific toe setting.
Old 12-11-13, 04:51 PM
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ISF001
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Hodor, it just sounds like plowing to me.
Old 12-11-13, 05:24 PM
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SeanGTS
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Give it some gas, she'll come around nicely
Old 12-11-13, 05:50 PM
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hodor
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Originally Posted by ISF001
Hodor, it just sounds like plowing to me.
Sorry not familiar with that term. What's plowing (googled it but no good definitions/threads came up).
Old 12-11-13, 06:02 PM
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lobuxracer
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Originally Posted by hodor
Sorry not familiar with that term. What's plowing (googled it but no good definitions/threads came up).
Understeering. It's called push, plowing, tight, and a few other things.
Old 12-12-13, 03:56 AM
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WillRockwe
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I have the same symptom, I believe it's caused by the incredible tight turning radius of the car. The tires are turned over so far the car has trouble tracking on them, so that bumpy feeling is the front tires scuffing sideways as you move forward.
Old 12-12-13, 08:16 AM
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rmillsISF
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Understeer: When your front end hits the wall first
Oversteer: when your back end hits the wall first
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