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Question about S85 performance

Discussion in 'Model S: Driving Dynamics' started by kirkbauer, Jul 15, 2016.

  1. kirkbauer

    kirkbauer Member

    May 31, 2015
    Atlanta, GA
    I just had an older (pre-AP) 85 as a loaner (my normal car is a P85D). I was surprised at how slow the acceleration was especially in the <~35mph range. Is that because of traction limitations with 2wd? It felt about the same as my P85D with Valet mode enabled. As I got past 35mph it felt much more powerful. I tried turning off traction control but no change.

    I've also had a loaner 85D and that one felt surprisingly quick compared to my P85D.
  2. 3mp_kwh

    3mp_kwh Active Member

    Feb 13, 2013
    #2 3mp_kwh, Jul 25, 2016
    Last edited: Jul 25, 2016
    Your P85D is always in a sort of Fast-Valet mode. I don't think the S85 needed traction control not to slip in a straight line, but the P85 will break lose, even near 30mph if traction control is off. All the AWD cars lose the 'Traction Control - Off' feature. I don't know if 85D / 90D are as abrupt as the P85D, but step on the pedal in a turn and you'll sometimes find there's nothing there. What's ordinarily a dangerous "no no" for non-"performance" drivers, instead has been over-compensated for (ala Valet). And it isn't traction limits, if what follows centering the steering wheel is this rush of power. All I know is It's not lineal and feels kind of stupid, when you don't move your right foot and the car suddenly accelerates.
  3. Model S M.D.

    Model S M.D. Ludicrous Radiologist

    Oct 31, 2015
    Houston, TX
    I felt the same way. I was considering a RWD plain 85 for the larger frunk and other advantages, but it was just a little too slow for me. The 85D hit a nice sweet spot...
  4. Skotty

    Skotty 2014 Model S P85

    Jun 27, 2013
    Kansas City, MO
    The acceleration feel is relative to what you are currently most used to. If you have been driving an old 4 cyl with a 10 sec 0-60, an S85 will feel like a rocket. If you have been driving a S P85D, the S 85 will feel really slow.
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  5. apacheguy

    apacheguy S Sig #255

    Oct 21, 2012
    So Cal
    I've driven a P85, but never a D. My S85 is plenty quick.
  6. RedP85+

    RedP85+ Member

    Apr 26, 2016
    Ottawa, Canada
    Personally I test drove a P90D after driving my P85+ to see the difference 1 second makes in the 0-60 launch and I was surprised that it really wasn't as big as I thought it would be. I guess expectations are bigger than reality.
  7. sorka

    sorka Well-Known Member

    Feb 28, 2015
    Merced, CA
    It's not traction limited. The P85 has the same rear motor and is considerably faster off the line. Not only that, the only difference is software as WK057 has already proven by turning an S60 into a P85 with a regular 85 battery.

    Vbox and power graph for an S85:

    Playing around with VBOX Sport.... 0-60 times...

    I've had my P85DL in valet mode and it's considerably slower than an S85.

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