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weejimmy
Monza


Joined: 26 Mar 2014
Posts: 223
Location: Bucks


PostPosted: Tue Jul 04, 2017 10:03 am    Post subject: Reply with quote

Embarassed
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Current: 991.2 C4GTS
Past: 991.1 C4S

Last edited by weejimmy on Tue Jul 04, 2017 10:20 am; edited 2 times in total
 
  
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weejimmy
Monza


Joined: 26 Mar 2014
Posts: 223
Location: Bucks


PostPosted: Tue Jul 04, 2017 10:04 am    Post subject: Reply with quote

Ooops... double and triple post! Clearly a bit excitable this morning having driven the GTS on roads I know well! Thumb
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Last edited by weejimmy on Tue Jul 04, 2017 10:21 am; edited 2 times in total
 
  
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weejimmy
Monza


Joined: 26 Mar 2014
Posts: 223
Location: Bucks


PostPosted: Tue Jul 04, 2017 10:14 am    Post subject: Reply with quote

Palmball wrote:
There is one aspect I'm having to get used to, and that's a higher level of vibration at high speed. It feels like a very minor wheel balance issue, with a slight shimmy through the wheel and pedals only. It could be a wheel balance slightly out (big wheels are very sensitive) so I'm getting it checked by my dealer tomorrow, however it's not the same on every surface so I suspect it's more the stiff set-up just allowing more road 'feedback' through.


This doesnt really match with my findings at all thus far. Mine smooths out more the quicker you are going. No harshness or shimmy at all.

The R8 I tried was a V10 Plus with the magnetic dampers and for me that crashed and bucked at low speed and I felt like I was being thumped about in my seat. The GTS feels way better damped to me. Plus I just adore the Alcantara seats. They really lock you in place but are much more confy than the leather seats from my C4s. I found the R8 seats hugely uncomfortable. They were wooden and unsupportive.

I have had lower back issues in the past (lessened after swapping Squash for a road bike) so I am very sensitive on ride. The two cars I tried at the PEC were both standard ride height wise. One was a GTS Coupe with manual and the other a C4 GTS Convertible. Of the two I liked the ride in the Convertible more. I checked and double checked the specs of both with my salesman (he pulled them up on the Porsche system) and both were standard GTS ride height. So I decided the manual was flavouring my feedback (I had a strong adverse reaction to it FWIW - contrary to expectations) hence why I preferred the PDK convertible.

But about 3 weeks ago I realised that the Convertible as standard is -10mm, not the -20 mm of the Coupe. Queue total overthinking and panic as to how the ride would be as by that point my car was built! But really, it is totally fine.

Maybe PDCC is also playing into this? I don't know. I almost ticked it but in the end I decided that I like a car that has some roll and movement. In reality the GTS suspension reacts so quickly I can't feel any body roll even without PDCC. So I am happy I didnt spec it.

For me, standard at -20mm and RWS all the way. I wouldn't bother with Axle lift unless you have a vertical driveway!
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HSC911
Magny-Cours


Joined: 23 Jul 2014
Posts: 2650
Location: Bedford


PostPosted: Tue Jul 04, 2017 10:20 am    Post subject: Reply with quote

That's so nice Jimmy!

 
  
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weejimmy
Monza


Joined: 26 Mar 2014
Posts: 223
Location: Bucks


PostPosted: Tue Jul 04, 2017 10:22 am    Post subject: Reply with quote

HSC911 wrote:
That's so nice Jimmy!


Thank you!

So good I tried to post the image three times. Dropped my son for school bus this morning, his comment was "that is just stunning" as he walked away shaking his head. Cool
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Palmball
Trainee


Joined: 05 Dec 2010
Posts: 52
Location: Loughborough


PostPosted: Tue Jul 04, 2017 8:37 pm    Post subject: Reply with quote

weejimmy wrote:
Palmball wrote:
There is one aspect I'm having to get used to, and that's a higher level of vibration at high speed. It feels like a very minor wheel balance issue, with a slight shimmy through the wheel and pedals only. It could be a wheel balance slightly out (big wheels are very sensitive) so I'm getting it checked by my dealer tomorrow, however it's not the same on every surface so I suspect it's more the stiff set-up just allowing more road 'feedback' through.


This doesnt really match with my findings at all thus far. Mine smooths out more the quicker you are going. No harshness or shimmy at all.

The R8 I tried was a V10 Plus with the magnetic dampers and for me that crashed and bucked at low speed and I felt like I was being thumped about in my seat. The GTS feels way better damped to me. Plus I just adore the Alcantara seats. They really lock you in place but are much more confy than the leather seats from my C4s. I found the R8 seats hugely uncomfortable. They were wooden and unsupportive.

I have had lower back issues in the past (lessened after swapping Squash for a road bike) so I am very sensitive on ride. The two cars I tried at the PEC were both standard ride height wise. One was a GTS Coupe with manual and the other a C4 GTS Convertible. Of the two I liked the ride in the Convertible more. I checked and double checked the specs of both with my salesman (he pulled them up on the Porsche system) and both were standard GTS ride height. So I decided the manual was flavouring my feedback (I had a strong adverse reaction to it FWIW - contrary to expectations) hence why I preferred the PDK convertible.

But about 3 weeks ago I realised that the Convertible as standard is -10mm, not the -20 mm of the Coupe. Queue total overthinking and panic as to how the ride would be as by that point my car was built! But really, it is totally fine.

Maybe PDCC is also playing into this? I don't know. I almost ticked it but in the end I decided that I like a car that has some roll and movement. In reality the GTS suspension reacts so quickly I can't feel any body roll even without PDCC. So I am happy I didnt spec it.

For me, standard at -20mm and RWS all the way. I wouldn't bother with Axle lift unless you have a vertical driveway!



I think a couple of things to update / clarify on....

1. I took the car to the dealer today and one of the front wheels was indeed out of balance, which they corrected. Trying it this afternoon and that indeed appears to have corrected the vibration issue. Phew!

2. I totally agree with your comments about the R8's ride and poor level of low speed damping. It was catastrophically underdamped so it bounced everywhere up to about 20mph. At higher speed it was fine so it seems like some really poor low speed tuning of the electronic dampers (I have now driven 4 new shape R8's and all are equally as poor). It simply bounced its way over speed bumps...and beyond.

However the R8 did have a softer sprung ride. The 911's spring rate appears to be much much firmer. I'm not saying this is bad thing because as you say, the 911 is so much better damped, especially at low speed, which will be why it feels more comfortable over things like speed bumps - you feel more of the bump at first but then it deals with the bump in one controlled up and down movement, whereas the R8 would cushion the initial bump more at first, then continue to bounce beyond it which is a far less comfortable feeling.
 
  
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weejimmy
Monza


Joined: 26 Mar 2014
Posts: 223
Location: Bucks


PostPosted: Wed Jul 05, 2017 9:44 am    Post subject: Reply with quote

Palmball wrote:

I think a couple of things to update / clarify on....

1. I took the car to the dealer today and one of the front wheels was indeed out of balance, which they corrected. Trying it this afternoon and that indeed appears to have corrected the vibration issue. Phew!

2. I totally agree with your comments about the R8's ride and poor level of low speed damping. It was catastrophically underdamped so it bounced everywhere up to about 20mph. At higher speed it was fine so it seems like some really poor low speed tuning of the electronic dampers (I have now driven 4 new shape R8's and all are equally as poor). It simply bounced its way over speed bumps...and beyond.

However the R8 did have a softer sprung ride. The 911's spring rate appears to be much much firmer. I'm not saying this is bad thing because as you say, the 911 is so much better damped, especially at low speed, which will be why it feels more comfortable over things like speed bumps - you feel more of the bump at first but then it deals with the bump in one controlled up and down movement, whereas the R8 would cushion the initial bump more at first, then continue to bounce beyond it which is a far less comfortable feeling.


I'll buy that!

Would I go for -20mm if I was ordering today? Hard to say. Probably yes. It is just so hard to really know the exact spec of what you are driving on a test drive... and how we feel about subjective things like ride changes with our moods anyway.

FWIW mine felt 'very' firm on the way home last night!

Rolling Eyes
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Past: 991.1 C4S
 
  
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Jenzbullets
Newbie


Joined: 27 Mar 2017
Posts: 22
Location: Milton Keynes


PostPosted: Wed Jul 05, 2017 12:44 pm    Post subject: Reply with quote

Looks absolutely stunning Weejimmy and I hope you're now loving it over the old car Mr. Green
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Guards Red/Black 991.2 GTS, Black Cayenne Diesel
 
  
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weejimmy
Monza


Joined: 26 Mar 2014
Posts: 223
Location: Bucks


PostPosted: Wed Jul 05, 2017 12:48 pm    Post subject: Reply with quote

Jenzbullets wrote:
Looks absolutely stunning Weejimmy and I hope you're now loving it over the old car Mr. Green


Definitely lots to appreciate Vs the 991.1 C4s. I am going to have to retrain myself not to bother revving the engine out though. Plus I am missing some of the aural emotion of the 3.8. The 3.0TT sounds very nice in isolation and in many ways is a more cultured sound, but it isn't quite so good at playing the hooligan when you want to make some noise!
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Palmball
Trainee


Joined: 05 Dec 2010
Posts: 52
Location: Loughborough


PostPosted: Thu Jul 06, 2017 8:54 pm    Post subject: Reply with quote

weejimmy wrote:

and how we feel about subjective things like ride changes with our moods anyway.

FWIW mine felt 'very' firm on the way home last night!

Rolling Eyes


Couldn't have put it better myself - it really is true that how you interpret ride quality can depend on a mood a lot, and whether you're 'in' the mood.

Sometimes it can be just nice to get into a big softly sprung car which would be sh!te in the bends, but nicely insulating on rough straight road.
 
  
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