Had a discussion with a P-car "expert" and the PDCC topic came up. He made a comment that has since been going around my head. What are the takes from those that drive these things hard ?

The concern was the PDCC is not a good idea if you are a relative novice and never track the car or drive the car to its limits. The reason is that the roll during hard cornering acts like a built in G-meter for the driver, i.e. you will notice the roll and know how hard you are pushing it. With the PDCC this indication has been removed and you are no longer able to judge as nicely how far you are away from disaster.
The suggestion was that this does not matter for the experienced track driver as he will compensate quickly for this.

This kind of agrees with a comment made by one of the testers in a recent EVO article where he complained about the car letting go without warning when pushed hard into corners.

What do you think ? True or BS ?

Rainier

 

I've wondered the same as I have PDCC specified on my forthcoming Cab. But I've consoled myself with the thought that the EVO article was accompanied by numerous photos showing the 991 in a landscape covered with snow. Draw your own conclusions from that. Journos can be pretty ragged hooners.

 

You mean to say you should not push the car hard into a corner on iced up roads ? Would it be fair to assume the tester in this case would know that ?
Assuming he would be reasonable, I should think he was "testing the limits" on a dry road... Hard to be certain of course

Rainier

 

We'll never know for sure in his case. But I for one will be on icy roads this winter and I won't forget the article. I would hope by then to have some feel for the car as well. The one I tested had reasonable feel when I provoked it (deliberately) on a cold, wet roundabout.

 

PDCC makes no sense on a 911. Maybe a Cayenne....

 

Not to you perhaps. I'll let you know in a few months' time after some hands-on experience.

 

Exactly why I did not order PDCC

 

I am quite sure that 991GT3 will come with PDCC as standard. If you drive fast, this would be a good option for you.

 

Assuming Porsche designed it correctly, the increased damping afforded by SPASM (in sport + mode) should be balanced by PDCC's ability to deliver a stiffer sway bar. One with out the other is more of a handling problem, if you intend to drive the car near the limit. The thing I like about the car with SPASM/PDCC is I can set it to be very forgiving or not based on my driving intent. That is excellent and the option to not buy that capability is just good product positioning on Porshce's part.. Unfortunately they don't seem to be explaining that well.

 

I Have SPASM and PDCC. Don't order a 991 without it!

 

I smile to myself every time I push a turn, as I think about one of the early reviews I read that said something like the lack of body roll and flat cornering induced vertigo, lol. Journos can come up with some intersting stuff sometimes.

 

Very interesting!

ChuckJ

 

BnB -- does your car fit in the garage in your avatar? Last time to the UK, we visited some friends in Cheltenham, and all but driver had to disembark before entering their post-war era garage. Driver then squeezed out sideways. But it did fit a car.

 

Having driven these cars at Barber Motor Sports Track, I learned that the PDCC prevents any body roll only up to .85g. Then it allows a small amount of roll. Porsche engineers are a lot smarter then we are guys. And all the concerns that have been brought up are already dealt with by them. In all my limited track experience the only time you dont want to inhibit body roll at all is in the wet or snow, otherwise in the dry it helps performance either with novice or experts.
Anyone who bad mouths PDCC in a 911, you better not ever drive one with it or you might really regret it.
Otherwise the new 991 is a great machine with or without all these great goodies they offer.

 

Thank you for that. This is a good, valuable response.

Rainier