New suspension changes
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chassis (04-26-2023)
#17
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Hey @chasse what are the last 2 pictures of? Good info, thanks for posting. Be interesting to see the new setup in detail.
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rajatparihar (04-27-2023)
#18
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Searcher356 (04-26-2023)
#20
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It looks like the new air suspension results in less height variation. On the base 9Y0.2 model air goes from 7.5 normal to 9.3 high terrain (1.8"). The 9Y0.1 variation is from 7.4 normal to 9.6 high terrain (2.2"). The steel suspension of the 9Y0.2 is 8.3", 0.1 inch higher than the 9Y0.1, despite the tires being 1" larger in diameter. I bet that the 31" diameter tires wasn't an upgrade. It was needed to compensate for the lack of height variation found in the new air suspension, as well as both air and steel having a lower suspension profile.
It would have been damaging to off-road cred if the Cayenne air suspension lost 1.3" in ground clearance at High. And so we get 31" tires.
For you folks interested in track performance from larger wheels, it also means that the new 22 inch wheels have as much sidewall as the previous 21 inch wheels.
It would have been damaging to off-road cred if the Cayenne air suspension lost 1.3" in ground clearance at High. And so we get 31" tires.
For you folks interested in track performance from larger wheels, it also means that the new 22 inch wheels have as much sidewall as the previous 21 inch wheels.
Last edited by gloryrd; 04-26-2023 at 10:48 PM. Reason: high to terrain
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#21
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It looks like the new air suspension results in less height variation. On the base 9Y0.2 model air goes from 7.5 normal to 9.3 high (1.8"). The 9Y0.1 variation is from 7.4 normal to 9.6 high (2.2"). The steel suspension of the 9Y0.2 is 8.3", 0.1 inch higher than the 9Y0.1, despite the tires being 1" larger in diameter. I bet that the 31" diameter tires wasn't an upgrade. It was needed to compensate for the lack of height variation found in the new air suspension, as well as both air and steel having a lower suspension profile.
It would have been damaging to off-road cred if the Cayenne air suspension lost 1.3" in ground clearance at High. And so we get 31" tires.
For you folks interested in track performance from larger wheels, it also means that the new 22 inch wheels have as much sidewall as the previous 21 inch wheels.
It would have been damaging to off-road cred if the Cayenne air suspension lost 1.3" in ground clearance at High. And so we get 31" tires.
For you folks interested in track performance from larger wheels, it also means that the new 22 inch wheels have as much sidewall as the previous 21 inch wheels.
The reduction in the range of the air suspension adjustment is unfortunate. Hopefully, the offroad mode will be available at higher speeds, though. With the current generation, the problem is that it drops from offroad mode as soon as you accelerate even a little, and you have to manually raise it again when slowing down for another rut in the road. Driving on rutty dirt roads it gets annoying quickly.
Also, surprisingly, approach/departure and break-over angles are actually slightly improved in the updated version - only by 0.1-0.2 of a degree, which is not a meaningful improvement, but based or reduced high mode ride height I'd expect them to be smaller rather than same or even very slightly better.
Last edited by MaxLTV; 04-26-2023 at 10:52 PM.
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... Hopefully, the offroad mode will be available at higher speeds, though. With the current generation, the problem is that it drops from offroad mode as soon as you accelerate even a little, and you have to manually raise it again when slowing down for another rut in the road. Driving on rutty dirt roads it gets annoying quickly.
From a @Schnave post:
1. Terrain Level.
Set 2.21 inches above Normal Level. Selectable at speeds of up to 19 mph for extreme off-road use. Engaged when Rock Mode selected. Deselected automatically and lowers to High Level at 25 mph. Capable of approaching gradients of 31.8 degrees while clearing the front overhang of the Cayenne.
2. High Level.
Set 1.03 inches above Normal Level. Selectable at speeds of up to 50 mph for off-road use. Engaged when Sand, Mud, Gravel Mode selected. Deselected automatically and lowers to Normal Level at 75 mph.
Set 2.21 inches above Normal Level. Selectable at speeds of up to 19 mph for extreme off-road use. Engaged when Rock Mode selected. Deselected automatically and lowers to High Level at 25 mph. Capable of approaching gradients of 31.8 degrees while clearing the front overhang of the Cayenne.
2. High Level.
Set 1.03 inches above Normal Level. Selectable at speeds of up to 50 mph for off-road use. Engaged when Sand, Mud, Gravel Mode selected. Deselected automatically and lowers to Normal Level at 75 mph.
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Thanks for the solid suspension comments @gloryrd and @MaxLTV . Have either of you seen diagrams, cutaway photos or performance charts (spring rates, suspension travel) for the new 2-chamber system?
Reading through the years of Porsche media literature, 3-chamber has been twice pointed to by Porsche as a better system than either single-chamber or dual-chamber. Now Porsche with 9Y0.2 is going backwards to 2-chamber.
Reading through the years of Porsche media literature, 3-chamber has been twice pointed to by Porsche as a better system than either single-chamber or dual-chamber. Now Porsche with 9Y0.2 is going backwards to 2-chamber.
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I know nothing about the new 2-chamber system besides what was in the press release. I'm very curious because I do drive on dirt roads. But chances are that it's not the same as any previous two-chambers. So it's hard to say if it's better or worse - could go in either direction. I hope it's an improvement. Fewer chambers does not necessarily mean anything is worse.
The three-chamber was definitely and improvement compared to one chamber, both in terms of comfort and robustness. The old 1-chamber was very loud, slow to adjust, and tended to have stuck valves and burn out the compressor. The new one does not seem to have these issues, at least yet. My E3 Turbo is at the mileage where my 958 air suspension started having issues, but this new one is fine so far. It's a sample of one, of course, but rennlist does not have as many complaints as the old one did either.
The three-chamber was definitely and improvement compared to one chamber, both in terms of comfort and robustness. The old 1-chamber was very loud, slow to adjust, and tended to have stuck valves and burn out the compressor. The new one does not seem to have these issues, at least yet. My E3 Turbo is at the mileage where my 958 air suspension started having issues, but this new one is fine so far. It's a sample of one, of course, but rennlist does not have as many complaints as the old one did either.
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chassis (04-27-2023)
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I'm not getting those conclusions.
The two chamber system is likely more expensive, as it is also using two valves in addition to the two way shocks. And normal is still going to be normal. It's not a shift, it's a widening. So comfort will be more comfort oriented and sports plus will be more sports oriented.
The two chamber system is likely more expensive, as it is also using two valves in addition to the two way shocks. And normal is still going to be normal. It's not a shift, it's a widening. So comfort will be more comfort oriented and sports plus will be more sports oriented.
IMO, Porsche did not make the change to save money.
Last edited by Ron.s; 04-27-2023 at 10:55 AM.
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You prolly have more experience driving off-road than me. But maybe the 9Y0.1 Cayenne isn't designed for your driving habits? I don't believe it totally drops from off-road mode. It's just not designed for driving over 25 mph in Rock Mode, or 75 mpg in the other off-road modes. So it lowers itself. Probably designed like that for safety reasons. I'm good with that.
From a @Schnave post:
From a @Schnave post:
1. Terrain Level.
Set 2.21 inches above Normal Level. Selectable at speeds of up to 19 mph for extreme off-road use. Engaged when Rock Mode selected. Deselected automatically and lowers to High Level at 25 mph.
Set 2.21 inches above Normal Level. Selectable at speeds of up to 19 mph for extreme off-road use. Engaged when Rock Mode selected. Deselected automatically and lowers to High Level at 25 mph.
#27
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Yes, it drops from the Terrain level to High level at 25MPH, and Terrain mode is sometimes necessary on rutted roads just to not scrape. But at the same time, it's frustrating to crawl at 25MPH on a road that's otherwise good enough for 50MPH+ to avoid the car dropping down and the bottom scraping the middle between the tracks. If the highest mode on the new one can be sustained at speeds higher than 25MPH, for me that would be enough to compensate for it being lower compared to 9Y0.1.
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chassis (04-27-2023)
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Regarding comments on joince and rebound control - let’s be clear.
“chambers”, whether 1, 2 or 3 relate to the air springs only. Not shocks.
“jounce” and “rebound” control relate to shocks only. No springs. “Chambers” bear no relevance here.
“PASM” is a shock absorber technology. Not springs.
I see in this thread some of these concepts may not be fully understood and are being exchanged for each other.
“chambers”, whether 1, 2 or 3 relate to the air springs only. Not shocks.
“jounce” and “rebound” control relate to shocks only. No springs. “Chambers” bear no relevance here.
“PASM” is a shock absorber technology. Not springs.
I see in this thread some of these concepts may not be fully understood and are being exchanged for each other.
Last edited by chassis; 04-27-2023 at 07:53 AM.
#29
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Regarding comments on joince and rebound control - let’s be clear.
“chambers”, whether 1, 2 or 3 relate to the air springs only. Not shocks.
“jounce” and “rebound” control relate to shocks only. No springs. “Chambers” bear no relevance here.
“PASM” is a shock absorber technology. Not springs.
I see in this thread some of these concepts may not be fully understood and are being exchanged for each other.
“chambers”, whether 1, 2 or 3 relate to the air springs only. Not shocks.
“jounce” and “rebound” control relate to shocks only. No springs. “Chambers” bear no relevance here.
“PASM” is a shock absorber technology. Not springs.
I see in this thread some of these concepts may not be fully understood and are being exchanged for each other.
#30
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Regarding comments on joince and rebound control - let’s be clear.
“chambers”, whether 1, 2 or 3 relate to the air springs only. Not shocks.
“jounce” and “rebound” control relate to shocks only. No springs. “Chambers” bear no relevance here.
“PASM” is a shock absorber technology. Not springs.
I see in this thread some of these concepts may not be fully understood and are being exchanged for each other.
“chambers”, whether 1, 2 or 3 relate to the air springs only. Not shocks.
“jounce” and “rebound” control relate to shocks only. No springs. “Chambers” bear no relevance here.
“PASM” is a shock absorber technology. Not springs.
I see in this thread some of these concepts may not be fully understood and are being exchanged for each other.
https://rennlist.com/forums/cayenne-...l#post18768978