Jim Wilke

I live in Alaska. Please advise.

jhenson29

Move.

APEX GT3

CayenneGTS with snow tires and chains.

CodyBigdog

Who said the measured shorter stopping distance for the S was just a one time event? Here is C&D (and I’m sure others) methodology on determining stopping distance. When it came to reporting the stopping distance for the 9924S, they described it as, “bang on consistent”.

C&D Braking Methodology:

Chassis performance testing answers two essential questions: how short can a car stop, and how hard can it turn. Our standard braking testing consists of six stops from 70 mph to zero. Five of them are done in close succession, with the sixth stop coming after approximately a mile of cooling so that we can roughly determine how well the brakes shed heat, which is otherwise known as "brake fade." Stopping from exactly 70.0 mph is, obviously, a very difficult thing to do. So, we stop from between 70.0 and 70.5 mph, using a tape switch on the brake pedal so we know exactly when the brake pedal is first touched. Then we correct the distance to a true 70.0-mph start based on the average deceleration from that stop. To avoid any issues with a one-off accomplishment, we report the second-best stop from the group of six as our 70-mph-to-zero distance. On high-performance vehicles, we also measure 100-mph-to-zero distance.

Oh, and the stopping distance between the S and the GTS, in some reports, is as much as 18 feet (100mph-0)*, so well outside any margin of measurement error. That said, I will concede that there could be a difference between these street measurements, and consistently hard braking while on the track. But suspect that doesn’t apply to most of us who will rarely, if ever track…and if we do, it would NOT be nearly as aggressive to where the performance of the brakes are degraded. My last comment comes to me from two trusted college buddies who track every weekend, weather permitting (in response to my question to them - should I get different brakes for the track? - In both cases, the answer was no, not needed).


* https://fastestlaps.com/models/porsc...arrera-gts-992

* https://fastestlaps.com/models/porsc...-carrera-s-992

ipse dixit

Here's the actual link to the C&D Brake Test.

So they take 6 stops from 70-0, with the last one after allowing the brake to cool after a 1-mile cool down. Then they take the 2nd best stopping distance from the 6 stops and publish that one.

But that type of testing doesn't really illustrate how the brake system (either on the S or the GTS or whatever) resists fade over repeated stops.

It would be more informative if C&D would publish all six stops to show the linear progression from Stop 1 to Stop 6, which would reveal how each brake system resists fade.

Instead they simply select the 2nd best stopping distance (to avoid the inevitable "hero" stopping time) which in the grand scheme of things is rather meaningless if what one wants to know is how each brake system (S v. GTS) resists fade over repeated stops. Because that's what's really important to me anyways.

So, yes, the C&D brake test is a one time event.

CodyBigdog

My post #34 is from C&D, on the methodology they use…..and was quoted exactly as they printed it.

”Our standard braking testing consists of six stops from 70 mph to zero. Five of them are done in close succession, with the sixth stop coming after approximately a mile of cooling so that we can roughly determine how well the brakes shed heat, which is otherwise known as "brake fade.”

Regarding possible brake fade on the 992S stopping distance, C&D further added: “bang on consistent” . 😱

If you don’t want to believe there is little to no brake fade, then maybe you should contact C&D and tell them to retract their statement that the braking distance was “bang on consistent”. 👍

sali1980

hahaha

BSO

OP, buy whatever model makes you happy and afford. I ordered a C4S over a GTS.

Avoid the trap of "NEED MOAR POWER!", even the base 911s will land you in jail and not all owners are Randy Pobst to drive these bars at their limits.

ron4sc

To your point, I was watching Max from AutotopNL drive a C2S at 191mph on the Autobahn. It's hard to call a car like that anything other than a hypercar as little as ten years ago.

doug_999

you meant “not noticeably quicker” correct?

boutrosa

Agreed.

I have a C4s. My my only issue with it is the low end torque. need a bit more on the low end. That is the only reason I ordered the tune. Not to go faster. It's plenty fast. You feel invincible driving it. Actually, I do not care for a faster 0-60. I think all the time that if I were to trade it in, it would be for a manual.

AlterZgo

No I don't. 2/10s of a sec in the 1/4 mile at 128+ MPH is a good 2-3 car lengths. That is very noticeable... more than one would think 30 hp would provide. In fact, it wouldn't surprise me at all if a GTS dynos about +50 more HP than a Carrera S.

lemonorlime

Hello, I voiced my displeasure with the low-end torque of my C2S and asked whether anyone has applied a tune felt a noticeable difference. The answers I received were typical "if you're looking for low-end torque get a big V8", hardly a beneficial answer. So since it looks we both share the same concern, did you get your tune yet? Which one did you decide on? How does the car perform now at low-end torque?

doug_999

you “might” notice that in a drag race assuming everyone uses launch control and everthing is perfect and you “notice” you barely lost.

but day to day, I assure you, you would not notice the difference. It is in fact, negligible.

22992

If the math holds up, you are definitely going to notice a C2 loss vs GTS. 2/10 of a second is indeed 2-3 car lengths at 128mph. In the racing world, losing by 2-3 cars could be considered getting smoked. You may not notice the added quickness sitting in the seat, but on a drag strip you sure will, provided of course everything goes perfect. AlterZgo is correct, this is not insignificant if it were to play out. However, this happening with any consistency is suspect, and everyone knows two tests at different times should be taken with a grain of salt. Directionally, the GTS will obviously be faster, how much so is yet to be proven in the real world. I'm hoping we got some reviews that put these 2 side by side soon.