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P85D (pre/post April) ride performance

Discussion in 'Model S: Driving Dynamics' started by marty2112, Jun 11, 2015.

  1. marty2112

    marty2112 Member

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    #1 marty2112, Jun 11, 2015
    Last edited: Jun 11, 2015
    Hello All,

    I currently have a P85 and looking at an opportunity to move to a P85D. I've read through the other thread/threads that state the first builds to have a "stiffer/harsher" ride. Seems like it has been confirmed that all the cars (post April) now have the same suspension components. Assuming this was done to help with sourcing components, scaling manufacturing, etc.

    I have recently driven both a newer version and a P85+ loaner. Loved the way both cars felt, but the P85+ (IMO) seemed to be connected to the road better.

    I guess my question is how much of the + performance has been removed on the newer builds and it is worth trying to find an inventory P85D built in 1Q 2015.

    Appreciate your comments/feedback.
     
  2. Niclas

    Niclas Member

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    Yes it seems the sportier type of suspension is now gone. I drove a P85D and it felt very wobbly compared to my P85+. If you want a firmer ride I guess the way to go is coil suspension now, but it has to be lowered a bit.

    - - - Updated - - -

    I wonder if the pre-april built P85D will be very sought-after, since the P85Ds now come with inferior/softer suspension. Why would anyone want to have a mighty P85D with soft suspension? Very much like the old P85 with air vs the P85+.
    And why don´t Tesla include adjustable damping air suspension?
     
  3. pimp-boy

    pimp-boy Member

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    So Tesla can make another option and charge you $15k for a P85D+.

     
  4. gordo

    gordo Member

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    Is there an official source for this? I can't find anything on the forums referencing this suspension change either...
     
  5. mgboyes

    mgboyes Member

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    This doesn't match my understanding. Quite the reverse: the P85D suspension setup is a further improvement on top of the enhancements that the P85+ had.

    They're definitely not about to go back to the same setup that's in the "standard" cars.
     
  6. mike-415

    mike-415 Member

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    I have a May P85D and the suspension feels like earlier P85Ds I've driven, which is much stiffer than other models. It's also stiffer than many German sport sedans' suspensions and stiffer than my Cadillac CTS-V with MR dampers in "tour" mode. Where is this data coming from about a change for the P85D? Tesla confirmed my car has the sport suspension, and I thought there were known different part numbers?
     
  7. peteyswift

    peteyswift Member

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  8. Niclas

    Niclas Member

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    P85D produced after april 30 do have the same air shocks, sway bar and air modules as the 70D and 85D.
    Before april 30 that was different. The parts number is now the same on P85D as it always have been on 85D.

    [​IMG]




    - - - Updated - - -

    The info about sport suspension in P85D has also been removed from the design studio.
     
  9. 3mp_kwh

    3mp_kwh Member

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    I haven't seen anything indicating sway bars, or the springs themselves are the same, across D's. Where did you get that from? Odds are the larger rear motor had them tweak up the rear spring rates, too. FWIW, I think the shocks are oil/gas, but since those are the same part number, and sold as one in the SAS cars, the 85D and P85D have the same damping rate. Again, spring rate could still be different as the part # for the coil spring, that is still a part of the air suspension, is separate.

    Anyone who cares to take a caliper to their sway bar(s) and report back, is welcome to. It would be nice to see this type of data keep piling up in Lola's original thread:
    [lolachampcar] Performance Upgrade Efforts

    I still think it is remarkable how Tesla achieved what I find to be decent vertical compliance, yet kept the coil P85D laterally stiff.
     
  10. AWDtsla

    AWDtsla Active Member

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    Air spring rate can be changed without changing the part itself. In the case of stiffening, you would reduce or delete an external chamber.
     
  11. Niclas

    Niclas Member

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    So,
    1. Info regarding sport suspension specific to the P85D has been removed from design studio,
    2. Subjective reports that the P85D suspension is much stiffer pre-april, and softer post-april,
    3. Data from the model S parts catalogue indicate the suspension is same in P85D as in 70D and 85D,

    ...and you STILL think the suspension is different in P85D?

    what evidence do you provide supporting that???
     
  12. bp1000

    bp1000 Member

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    Built post April or ordered post April?

    I ordered in feb, my order is fixed such as rear next gen seats, so I'm assuming that applies to suspension components on my air too??

    Uk customer hence the very long wait.

    Ps
    l would be annoyed at receiving a wollowy car with such high performance. It needs stiffer suspension to maintain stability and handling to match the speed.
     
  13. peteyswift

    peteyswift Member

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    Fwiw, you can see the part number for the air springs from under the wheel well.
     
  14. marty2112

    marty2112 Member

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    I didn't mean to cause confusion and delay.... After driving the P85+ loaner, one of the folks at the SC told me that the + components were being phased out. Now, what I don't know is how many/how long did Tesla put these parts in the first run of P85Ds. I really have no idea. Factor in the removing the staggered 21" setup may coincide with this change also.

    I know driving a May build P85D last week, did feel a little different. It's not apples to apples, so it may be a moot point.

    Don't want to stir anything up if this is a non factor.
     
  15. andrewket

    andrewket 2014 S P85DL, 2016 X P90DL (soon 100)

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    This is surprising. Perhaps a P85D+ is coming. Do all of us with Nov 2014-April 2015 P85Ds get a plus insignia at our next service?

    Bizarre...
     
  16. 3mp_kwh

    3mp_kwh Member

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    Concensus is the P85D suspension is too firm, but at the same time there are multiple people having issues with their air suspensions.



    Niclas, You are extrapolating a lot from a single part number. Suspensions have many parts, and you are the one claiming they are all the same. You were kind enough to paste a reference for the air spring units. If you did the same for springs and sway bars, I'd begin to agree. As it stands, other changes like ball joints vs. bushings can also influence feedback.

    Over time, I think more than a few of us have begun to see the Design Studio as "maybe, maybe not". I'd much rather see additional part numbers or actual measurements.
     
  17. peteyswift

    peteyswift Member

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    Can someone who feels comfortable, ask Jerome? I'm sure we'll be done with this question by today. :)
     
  18. sorka

    sorka Active Member

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    If anyone wants to trade my pre april(built in March with 3500 miles on it) suspension for the their post april suspension, let me know :) I like stiff. I've always gone for the performance packages with the stiffer suspension (Z51 on the corvette for instance) but my March P85D is over the top washboard / go cart stiff. Perfect for a smooth track. No so good on typical Calofornia roads. The P85+ loaner I had was perfect.
     
  19. BrianC

    BrianC Member

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    I can see them wanting more and more parts on all three types of the MS (70-85-p85) to be the same just for the cost reasons alone.
     
  20. ra-san

    ra-san Member

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    Would be cool if some of us who have P85Ds that were delivered around the same time, have firm suspension, and *love* it were able to meet up with you and have us all see what the differences, if any, are in the feel. Whether it really only comes down to preference, or if there's differences in the first builds too (or a problem vs. a planned build difference).

    Maybe at one of the Tesla events coming up, or a local club event? Seems like there is definitely a difference in the D's being made now. Thanks to my December "black hole" build, I missed the heated wheel and LTE, but sure am glad I got this suspension, from what I hear.
     

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