718 PASM or SPASM?
Discussion
OMV said:
Hello all
Any thoughts on ride quality with the 18" wheels, and if PASM would still improve ride quality further? (Need it anyway for PTV though haha)
It appears impossible to test drive 18" before buying...
Definitely does seem impossible - in fact nearly everything I tried had 20" wheels. I still ordered 18s and PTV/PASM as I know I'll like them better for ride quality and steering feel, even though the comfort setting for PASM is ludicrously refined even on 20s.Any thoughts on ride quality with the 18" wheels, and if PASM would still improve ride quality further? (Need it anyway for PTV though haha)
It appears impossible to test drive 18" before buying...
Liam
When I was at the PEC in January, "my" Cayman actually had 18s and PASM.
You'll be pleased to hear that it was great to drive and given it had both PASM and smaller wheels, it was smooth as silk around the PEC centre.
Not going to lie though, I felt a bit jealous of the other people in 718s with "flashier" wheels, but each to their own.
Krobar said:
Non PASM sits between Sport and Comfort settings on PASM and when combined with 18s it is very forgiving both for poor road surfaces and stopping your worrying about wheel damage, the 18 Eagles also come with a rim protector and are great for the badly maintained country roads I drive on. You have probably noticed it is highly down to preference but in my opinion 18s on passive is forgiving and will save you money to spend on other options or elsewhere. To look at I think the 19s look best, some of the 20s options look crap imho.
That's true of spring rates and anti-roll stiffness, but it's in the adaptive damping where PASM gains. Depending on road surface and driver behaviour in Normal damping can be either much softer or stiffer than non-PASM. In Sport damping covers a narrower range from approximately same as non- PASM to quite a lot stiffer.Edited by Krobar on Sunday 26th February 14:09
Sorry I've just re read that and it's misleading spring rates and anti- roll stiffness are between non- PASM standard and non- PASM X73. Damping changes I quote are relative to non-PASM standard (not sure how they compare with X73)
Edited by bcr5784 on Monday 27th February 14:41
bcr5784 said:
I have 18" rims for my 981S (for winter tyres), which came with Goodyear Eagles. I did a back to back test of the Eagles with my N0 Pirellis which are on 19" rims. So not the same tyre so don't read too much into my findings. My car has PASM. The car did have a better ride on 18" rims - hardly noticeable at the back, more so at the front. That is to be expected, likewise the car felt looser on the 18" rims. It had a bit more steering feel. How much is down to the tyre change I'm not sure, but I'd certainly put the ride down to the rim size. However the car understeered more, which I hated. And regarding ride PASM makes it so good on 19s that the gain in that area was of little value to me. So for me keeping 19" rims was an easy choice.
Having tried 20" rims too imo 19s are the optimum size for the 981 - and I didn't like the ride on a non-PASM 718 on 20" rims either.
Interesting reading around your goodyear 18 test. How long were they on your car, a couple of hours or a good few weeks?Having tried 20" rims too imo 19s are the optimum size for the 981 - and I didn't like the ride on a non-PASM 718 on 20" rims either.
ATM said:
Interesting reading around your goodyear 18 test. How long were they on your car, a couple of hours or a good few weeks?
Only a couple of hours and as I say you shouldn't read too much into it. But I did back to back them over the same route against my quite well worn P Zeros on 19s. Given that the N1 Pzeros are a definite step forward in terms of handling and balance (though perhaps not outright grip) - I'd probably choose them over Eagles. Personally want to see a proper comparison test of the PS4S against the current spec (n1) PZeros before choosing my next tyre. I certainly wouldn't choose the PSS on the basis of the group test above.bcr5784 said:
ATM said:
Interesting reading around your goodyear 18 test. How long were they on your car, a couple of hours or a good few weeks?
Only a couple of hours and as I say you shouldn't read too much into it. But I did back to back them over the same route against my quite well worn P Zeros on 19s. Given that the N1 Pzeros are a definite step forward in terms of handling and balance (though perhaps not outright grip) - I'd probably choose them over Eagles. Personally want to see a proper comparison test of the PS4S against the current spec (n1) PZeros before choosing my next tyre. I certainly wouldn't choose the PSS on the basis of the group test above.
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