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Car squirely when I punch it at speed

Discussion in 'Model S: Driving Dynamics' started by artsci, Jun 22, 2017.

  1. artsci

    artsci Sponsor

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    This is new. When I'm driving the car over about 50mph and punch it it pulls to the left as if there is some problem in the drive train. I've never experienced this before.

    Any ideas about what it might be?

    Probably need to get it to Service, and soon.
     
  2. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

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    First check tire pressures. Next alignment. There are other possibilities, but those are the two most common.
     
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  3. artsci

    artsci Sponsor

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    Tire pressure are spot on and I had it aligned a few weeks ago, so that's probably not it.
     
  4. hmmm

    hmmm Member

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  5. Carl

    Carl Member

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    I had this on my first MS (RWD). In my case, loose connection between motor and axle. Just a screw to be tightened. Note: car would pull to the left upon acceleration but also pull to the right upon deceleration.
     
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  6. rdr1rx

    rdr1rx Member

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    My E60 V10 BMW M5 did this (violently) when the rear PS2s (running Dinan-spec 295/30/19 on Dinan forged wheels) were worn to 4/32". Alignment and pressures spot-on. New PS2s solved the issue, good for (only) a short-lived 7,000 miles. My S75 squirmed and pulled just a little once the rears hit 3/32". New tires (21" ContiSilents) at 25,300 miles solved the issue. How's your rear treadwear?
     
  7. SageBrush

    SageBrush Active Member

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    Nothing wrong with being a squire
     
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  8. sdorn

    sdorn Director of Awesome

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    Yeah, when I saw the thread title I was wondering what squirely behavior the car was exhibiting. Turns out they apparently dart left when you punch them. Good to know.
     
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  9. PeterHG

    PeterHG Member

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    Are you RWD or AWD? On my test drive, I found the RWD car squirrely--not pulling to the left necessarily, just kind of skittish overall. So I bought the AWD.
     
  10. LoL Rick

    LoL Rick Like Buttah

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    Had this happen on a Mercedes years ago and it drove me crazy. Turned out to be a bad bushing in one of the rear suspension control arms.
     
  11. iwannam3

    iwannam3 Member

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    The last thing worked on is usually the cause, the "alignment" may have left a bolt loose after adjusting the suspension.
     
  12. artsci

    artsci Sponsor

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    Those are exactly my symptoms. Thanks!
     
  13. artsci

    artsci Sponsor

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    Rear tire tread wear is like new.
     
  14. artsci

    artsci Sponsor

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    Fixed the problem with an alignment.
     
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