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992 GT3 feels sketchy to drive fast

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Old 03-17-2024 | 11:04 PM
  #16  
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Originally Posted by 992_gt3
Hello, compared to previous 911’s I’ve owned, my 992 GT3 feels sketchy to drive on backroads or 100+. Is this the norm for GT3s or could it just be my car? The new double wishbone front end on the 992? I’m running Cup2s and my car is fully stock. Rear wing is on max downforce setting but I can’t seem to think that a wing adjustment will make that much difference?

Any help would be greatly appreciated. 👍
when I first started driving my 992, I noticed it was darty, thought something was wrong, so weird, but when I took it to track, the faster you go, the more incredible the car feels. It’s beyond insanely awesome, so I’m guessing you need alignment for sure, as other poster said, get it into proper shop for setup.

and guys, please leave the speed for the track, not on public roads!!!!!!
Old 03-17-2024 | 11:34 PM
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Originally Posted by Taffy66
The darty feeling you experience is I assume on rougher undulating backroads with varying cambers ?. If my assumption is correct then its caused by the DW suspension combined with a much quicker geared steering rack as fitted to the 992GT3 compared to the 991GT3. My 991.2GT3 RS and GT4 RS even with a quite aggressive track geo and -3.2 front camber doesn't do it. Double wishbones maintain camber over rough roads and as a result feels twitchy and requires both hands on the steering wheel. It can get quite taxing over longer distances. I also have a Ferrari 812SF with front DWs and very quick steering and reactive rear axle steering just like the 992GT3. The 812 behaves in a very similar manner/
The solution is to get the geometry altered by reducing the static negative front camber Porsche engineered into the 992GT3. This was deliberate to make the car feel more reactive and sporty to drive just like Ferrari did with the 812. All great until you drive on rougher roads.
All the above is direct from one of the best suspension alignment experts in the the UK who I spoke to very recently. Chris Harris also sad the same thing and one of the reasons he sold his 992GT3 Touring but kept his old 991GT3 Touring.
This.
Old 03-18-2024 | 12:24 AM
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Today's track specials (especially from Porsche) are well TRACK cars. What makes great track cars usually makes POOR road cars, unless you are lucky enough to drive on well maintained/smooth roads.

Porsche's PASM just isn't very advanced or quick reacting to be a true dual nature car. You need to move to something with Magnetic Ride Control or McLaren's hydraulic suspension to get a dual personality car that excels at both.

Old 03-18-2024 | 12:53 AM
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Originally Posted by 96redLT4
Are you kidding or were you really going 170mph on a 'country road'? Seems like it would take a long time to get up to that speed and a lot could go quickly wrong here....
Strangely, the car settles back down and gets more predictable at 176+ . Porsche really needs to do something about the handling on these cars.


Of course I am kidding.
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Old 03-18-2024 | 01:40 AM
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Originally Posted by 4carl
When I first drove my touring, I thought it was really darty.
I checked the alignment and the front was towed out.
I reset the toe to 1/32 toe in and put the front bar in the soft setting.
made a big difference .
It’s still a twitchy car but those changes made a significant difference.

I also have a GTS knight and Day the GTS is much more compliant and less nervous.
totally different suspension apples and oranges
I took delivery of my Touring almost a year ago. I purchased it from a dealer that was not in my area so the car was shipped down to me after it arrived from the port. The dealer never discussed any of the settlings with me. I didn't even realize we had a "soft" setting for the front bar. I'm due for an annual service soon - I'm assuming I can ask my local dealer to check the setting and make adjustments. If anyone has any experience with this I would certainly appreciate your feedback.
Old 03-18-2024 | 02:01 AM
  #21  
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Originally Posted by 4carl
semantics
Words matter. Context and perspective are important as well.
My opinions are based on my experience on smooth roads. The car isn’t twitchy, the driver may be however.
Ymmv.

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Old 03-18-2024 | 04:04 AM
  #22  
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strange. I have has just about every variant of 911 from 1969 to now.
I have driven most of them with fkd up alignment as well
992 even when it's poorly aline, it is the absolute easiest car to go fast. I don't even Bothe rchkeing alignment on it anymore. Never darty to me.
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Old 03-18-2024 | 04:37 AM
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Originally Posted by ocb181
I took delivery of my Touring almost a year ago. I purchased it from a dealer that was not in my area so the car was shipped down to me after it arrived from the port. The dealer never discussed any of the settlings with me. I didn't even realize we had a "soft" setting for the front bar. I'm due for an annual service soon - I'm assuming I can ask my local dealer to check the setting and make adjustments. If anyone has any experience with this I would certainly appreciate your feedback.
Its really simple. You need to get both front wheels off the ground then it takes about 15 minutes. You can see from the picture there are three holes. It comes from the factory on the middle setting. The hole closest to the end makes the bar softest. Get both front wheels off the ground then it takes about 15 minutes. You can see from the picture there are three holes. It comes from the factory on the middle setting. The whole closest to the end makes the bar softest And increases the front end grip. Because the soft bar transfers less shock to the other wheel. It does tend to soften the front end Ride slightly. as I said in the earlier post this in combination with adjusting the front toe made a significant difference in the tracking.


Last edited by 4carl; 03-18-2024 at 04:41 AM.
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Old 03-18-2024 | 10:10 AM
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Originally Posted by ocb181
I took delivery of my Touring almost a year ago. I purchased it from a dealer that was not in my area so the car was shipped down to me after it arrived from the port. The dealer never discussed any of the settlings with me. I didn't even realize we had a "soft" setting for the front bar. I'm due for an annual service soon - I'm assuming I can ask my local dealer to check the setting and make adjustments. If anyone has any experience with this I would certainly appreciate your feedback.
wait, you bought a touring and your SA didn't go over the features with you. i think they are suppose to do two deliveries with you especially on new cars ... just another Saturday night at the Porsche dealer.

go find your SA and make him / her do some work. YES, your Porsche dealer should be managing issues / concerns.

edit: here is an even better idea, just get rid of it ... ill buy if from you today!

Last edited by tmslc; 03-18-2024 at 10:12 AM.
Old 03-18-2024 | 10:30 AM
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Originally Posted by tmslc
wait, you bought a touring and your SA didn't go over the features with you. i think they are suppose to do two deliveries with you especially on new cars ... just another Saturday night at the Porsche dealer.

go find your SA and make him / her do some work. YES, your Porsche dealer should be managing issues / concerns.

edit: here is an even better idea, just get rid of it ... ill buy if from you today!
To be honest, it's likely the SA doesn't realize the car has adjustable coilovers, never mind adjustable sway bar settings.
Old 03-18-2024 | 12:25 PM
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Originally Posted by rk-d
To be honest, it's likely the SA doesn't realize the car has adjustable coilovers, never mind adjustable sway bar settings.
Forget about the SA.
Most owners don't even bother reading the owner's manual, which offers the "performance" setting of tire pressures which results in a much more compliant ride.

Old 03-18-2024 | 01:40 PM
  #27  
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Originally Posted by 4carl
Its really simple. You need to get both front wheels off the ground then it takes about 15 minutes. You can see from the picture there are three holes. It comes from the factory on the middle setting. The hole closest to the end makes the bar softest. Get both front wheels off the ground then it takes about 15 minutes. You can see from the picture there are three holes. It comes from the factory on the middle setting. The whole closest to the end makes the bar softest And increases the front end grip. Because the soft bar transfers less shock to the other wheel. It does tend to soften the front end Ride slightly. as I said in the earlier post this in combination with adjusting the front toe made a significant difference in the tracking.
Just be aware that as Carl correctly mentioned here, softening the front bar will give the front axle more grip, relative to the rear. So depending on the exact driving behavior being described as darty, this could worsen it in some cases (will tend to make the car oversteer more - if this was the reason for calling it darty). Keeping the front and rear bars in sych will tend to maintain the factory handling balance (understeer vs. oversteer)

I have a tendency to mess with swaybars on my 911's all the time, but I have found the factory settings on the 992 perfect for me. If one wanted to soften the front bar (due to tramlining), I might suggest also softening the rear bar to prevent oversteer (if this is a concern).

Last edited by GrantG; 03-18-2024 at 01:42 PM.
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Old 03-18-2024 | 02:00 PM
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As noted above be sure the aero is not totally out of sync. I have max downforce on the rear and 3/4 on the front. I also had a full alignment done by a competent shop. It drives on rails.
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Old 03-18-2024 | 02:40 PM
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Originally Posted by GrantG
Just be aware that as Carl correctly mentioned here, softening the front bar will give the front axle more grip, relative to the rear. So depending on the exact driving behavior being described as darty, this could worsen it in some cases (will tend to make the car oversteer more - if this was the reason for calling it darty). Keeping the front and rear bars in sych will tend to maintain the factory handling balance (understeer vs. oversteer)

I have a tendency to mess with swaybars on my 911's all the time, but I have found the factory settings on the 992 perfect for me. If one wanted to soften the front bar (due to tramlining), I might suggest also softening the rear bar to prevent oversteer (if this is a concern).
it’s interesting because I’ve played a lot with sway bars also. I went back-and-forth on the Gt3 trying the middle and soft for me I like the soft seems to track better and turn in better. Understand I’m not tracking the car. This is all strictly public roads @ maybe 6-10ths.. The GT4 which I had two of them that I did Track came through both in the middle,but you had to run the front full soft and the rear full hard to get the car to rotate. Otherwise it would under steer All of the magazine tests on the GT four first thing they did was change the bar settings. The reality is drivers preference plays a major roll . Some guys like the car loose some guys like it tight
Old 03-18-2024 | 02:44 PM
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Originally Posted by 4carl
it’s interesting because I’ve played a lot with sway bars also. I went back-and-forth on the Gt3 trying the middle and soft for me I like the soft seems to track better and turn in better.
Did you move only front bar or both?



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