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Discussion Starter · #1 ·
Porsche lists the “Max. ground clearance (steel suspension)” as 4.4 inches. I find this confusing given that the standard config has a 20mm lowered Sport PASM suspension. That would make its clearance higher than the base config 718 model, which everyone seems to agree is 4.3”. Would that 4.4” measurement be for a different point on the chassis compared to the base model measurement? Porsche website doesn’t even list ground clearance for any of the models besides the GTS 4.0. So maybe the often cited 4.3” clearance for the base model is wrong?

Another data point… the clearance for the base 911 is listed as 4.7”. So in general, the 718s are lower than the 911s?
 

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Discussion Starter · #4 ·
I just put a tape measure under the car from floor to the panel under the seats (random choice), and it is indeed just shy of 4.5" on a GTS 4.0 with S-PASM (-.75" from standard)
Thanks. In that case, the often cited clearance of 4.3” for the base and S models must not be correct. I don’t see how they could be lower than the GTS.
 

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Discussion Starter · #5 ·
I figured it out. Two different measurements involved. Porsche’s spec as quoted above is the maximum clearance. But what is most often cited is the minimum clearance. As I had assumed, that measurement must be from the lowest point under the front spoiler — more specifically the “sacrificial” plastic strip that typically gets scraped. That of course would be lower than the height of the “steel suspension”, where you would get the maximum measurement.
 

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2021 Cayman 2.0T MT Aventurine Green • Stuttgart • No PASM • R18 • Rear wiper • PCM deleted • SSK
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I happened to have few pics on the topic.
Here is the front underfloor of the base 718 without PASM (in millimetres). That's the real ground clearance — and the largest there is.
Switching to 20 inch wheels, for example, adds nothing at the front.
Automotive tire Hood Road surface Asphalt Bumper


Next is the Base's front lip compared to the front lip of the 4.0 GTS.
Although the painted part of the standard car is situated higher, the clearance isn't larger because of the massive plastic skirt.
Automotive tire Tire Road surface Asphalt Yellow


Finally here are the Base (pictured left) and the 4.0 GTS with PASM (-20 mm) face to face. The swapped wheels should not fool you.
The overhang of the GTS (pictured right) is slightly longer, thanks to the Sport Package bumper fitted as standard.
But the pure height difference between the sharp edges is surprisingly not significant.
Wheel Tire Car Vehicle Motor vehicle


And, just in case you ever wondered, here is the clearance under the rear subframe.
Tire Wheel Automotive tire Automotive lighting Hood
 

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Great pictures! Thanks.

Remember, PASM does not change ride height. It just firms up the suspension. I was confused by that coming from a Macan because my suspension height could be changed.
 

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Discussion Starter · #11 ·
Great pictures! Thanks.

Remember, PASM does not change ride height. It just firms up the suspension. I was confused by that coming from a Macan because my suspension height could be changed.
For clarity, PASM is always on. The firming up is when sport mode is selected.
 

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I happened to have few pics on the topic.
Here is the front underfloor of the base 718 without PASM (in millimetres). That's the real ground clearance — and the largest there is.
Switching to 20 inch wheels, for example, adds nothing at the front.
View attachment 37105

Next is the Base's front lip compared to the front lip of the 4.0 GTS.
Although the painted part of the standard car is situated higher, the clearance isn't larger because of the massive plastic skirt.
View attachment 37106

Finally here are the Base (pictured left) and the 4.0 GTS with PASM (-20 mm) face to face. The swapped wheels should not fool you.
The overhang of the GTS (pictured right) is slightly longer, thanks to the Sport Package bumper fitted as standard.
But the pure height difference between the sharp edges is surprisingly not significant.
View attachment 37107

And, just in case you ever wondered, here is the clearance under the rear subframe.
View attachment 37108
Very nicely done sir. Thank you!
 
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