PASM - 10mm or 20mm?
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Thread: PASM - 10mm or 20mm?

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    PASM - 10mm or 20mm?

    I'm interested to know how important PASM is in the resale market, and if there is more interest in 10mm or 20mm. Thanks for your thoughts!

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    Ive done much lurking and here is my conclusion: most go for the 20mm (aka SPASM) for the looks... even though the justification has something to do with track driving. It also apparently scrapes more, tho i cant imagine another 10mm makes much of a difference.

    The SPASM may also come with beefier anti roll bars and engine mounts. Or was it PASM and also SPASM? Im not sure

    As for resale, the more spirited drivers will look for PASM/SPASM and be excited for finding it since its a rare option for most people.

    Also PASM/SPASM seems to be durable and not have notable problems down the line associated w failure or need for replacement

    And if you happen to resell your car to someone who doesnt care about stiff suspension, the non-stiff setting of PASM absorbs bumps better than the base suspension.
    Last edited by Kaffeinski; 12-16-2017 at 04:49 PM.

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    Re: PASM - 10mm or 20mm?

    Good stuff! That last comment is quite interesting. So the stock stiffness setup is in between the two PASM/S-PASM settings. I think I've read that PASM is a must with 20" wheels (shorter sidewall.) Perhaps that's the reason! Thanks.

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    Re: PASM - 10mm or 20mm?

    Where you live and the size of wheels also play a role .. (often overlooked)

    For resale :
    bad roads like Chicago area then go with 10 mm + 19" wheels.. good roads even 20" will do

    spasm 20 mm drop is a rare option for a good reason. (not very popular). In other words is something you get for "yourself" not considering resale for a track focused car ..

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    Re: PASM - 10mm or 20mm?

    I'm leaning toward 20" wheels. Any experience with 20" wheels WITHOUT PASM, or is PASM a must in that case?

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    Re: PASM - 10mm or 20mm?

    If you go with 20" and do not like the ride cause it's too stiff you are screwed if no pasm. It is one of those rare options that cannot be added later by dealer. Wheels can be swapped out for a different size. For resale pasm is popular. I think most do not take it to save cost when buying new. In other words when you test drive with 20" wheels and no pasm and you like the ride then why waste $ on that option ? (make sure you test over some rough pavement)

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    Just my perspective: Iím in the detailed search for a 981 Cayman S right now, and Iím not assigning any value (meaning value to me) for PASM.

    In my thinking, the car already handles brilliantly, road harshness can be addressed with wheel selection as you have already noted, and I just donít want the long-term liability that comes with the PASM hardware since I plan to have this car for a long time.

    Again, just my perspective. Whatever you choose, Iím sure youíll enjoy it. Good luck!

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    Re: PASM - 10mm or 20mm?

    10mm can actually make a significant difference from a convenience perspective. I have two Caymans, a 987 with base suspension, and a 981 with PASM (-10mm). With the latter I can't slide my whole-car lift under the car, I can't clear many curbs when parking, and can't get into certain driveways without scraping. It's a very binary thing, you either have enough clearance or you don't. It's probably a safe bet that Porsche made the base suspension as low as possible before unduly inconveniencing a significant segment of their buyers. Any lower will require additional accommodations from the driver.


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    Re: PASM - 10mm or 20mm?

    Quote Originally Posted by Third View Post
    I'm leaning toward 20" wheels. Any experience with 20" wheels WITHOUT PASM, or is PASM a must in that case?
    I have a 718 Base Boxster with 20” wheels and the ride and handling are superb on smooth or rough roads. I’ve never driven a 718 with PASM though to compare. I think you’ll find the regular suspension to be great compared to just about any other sports car out there. In fact, I was amazed at how well the car road while still having flat cornering and top notch handling.
    Last edited by OhRichman; 12-17-2017 at 10:05 AM.

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    Re: PASM - 10mm or 20mm?

    The last two posts has me thinking PASM without corresponding lowering (10 or 20mm) might be the best compromise, if only it was offered! In any case, I believe I'll pass on -20mm for sure. Thanks!

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    Re: PASM - 10mm or 20mm?

    Personally I looked long and hard to find my current CPO 981 CS with the options I wanted, and one of those options was PASM. I wanted 20" wheels strictly for their looks and based on my previous 987 CS I knew the ride, even with 19", was quite harsh. I had also driven a 981 CS with the X73 suspension (-20mm) and had discover that every driveway entrance became a risk to the front air spoiler on the bottom lip of the front bumper. I won't argue with @Kaffeinski as to the great looks of the car with either SPASM or the X73, both of which are 20mm lower than stock. But I have to assume he has either very flat roads and driveways or no experience with driving a Porsche around town that is 20mm lower than stock. The standard PASM at 10mm lower is a good compromise and offers a reasonably comfortable ride with 20" wheels and the "comfort tire pressure". Even with that I have to slow on entering and exiting driveways, typically do so at an angle so only one wheel at a time comes off the rain bump. Anyway that's my opinion. Hope it helps!

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    Quote Originally Posted by Third View Post
    Good stuff! That last comment is quite interesting. So the stock stiffness setup is in between the two PASM/S-PASM settings. I think I've read that PASM is a must with 20" wheels (shorter sidewall.) Perhaps that's the reason! Thanks.
    No, i meant to say that stock suspension is in between the soft/stiff modes of PASM.

    SPASM is more stiffer overall than both stock suspension and PASM.

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    Quote Originally Posted by RickH View Post
    (kaffeinski has) no experience with driving a Porsche around town that is 20mm lower than stock. The standard PASM at 10mm lower is a good compromise and offers a reasonably comfortable ride with 20" wheels and the "comfort tire pressure". Even with that I have to slow on entering and exiting driveways, typically do so at an angle so only one wheel at a time comes off the rain bump. Anyway that's my opinion. Hope it helps!
    Yup, you assumed correct. Im currently waiting for my order and this is my first Porsche. I went with PASM so i appreciate your words of experience.

    Also surprised to find out from Alchemist's post above that even the 10mm drop will hit some parking curbs. Thanks for the heads up
    Last edited by Kaffeinski; 12-17-2017 at 09:40 PM.

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