jmartpr

There's always room for improvement
Maybe a good catback and/or header system could give back the "lost" hp to the GT3 and then a bit more....
I will also reserve the opinion on the overall sound once I hear it in person....

Sean in Texas

I think previously they said it would not be available in North America.

wizee

Usually power gains are usually fairly small from exhaust changes alone. People tend to like cars that are quiet inside and loud outside, so they can **** off neighbours and pedestrians without damaging their own hearing

3-Pedals

I am surprised that it is 8 seconds faster than the 991.2 GT3 in nurburgring when the GT3 came with cup2s and cup2Rs easily add 7-8 seconds. And then the gap to previous GT3RS is 5 seconds. I guess thats e-lsd and more aero. But tires are a massive difference. The placement of the engine probably doesnt have as pronounced effect as most anticipated.

wizee

The 991.2 GT3 has a more sophisticated multi-link rear suspension, though it sounds like the GT4 RS improvements to rear suspension geometry (camber, toe) fixed the main shortcomings of the stock 982 GT4 suspension. Other tweaks to braking, dampers, spring rates, and the RS front suspension probably also helped make up for the rear suspension limitations. I’d expect 982 GT4 RS performance to be roughly equal to the 991.2 GT3 on equal tires.

usctrojanGT3

Putting it catless headers will make the car sound and perform better.

GrantG

The 4RS has better gearing than the 991.2 GT3 PDK also.

But in general, same power, similar weight, similar downforce and drag and you get similar lap time on similar tires.

I agree that engine placement (mid vs rear) is not a big deal with respect to lap time. It just takes a different driving style to maximize each.

I guess I’m more surprised that the 992 lost 17 seconds to its predecessor (figure half of that due to R tires) with just 2% more power, better downforce and front suspension.

WirthO

Does anyone know if the battery in the 4rs is a light weight lithium or a standard battery? I can't find any info on that.

very green R

For those fortunate to get their GT4RS in PTS here is an accelerated timelapse video condensing 2 days to 4 minutes showing the creation of a PTS 992 GT3 which is built on the same production line as the 718 GT4RS. Covers from welding sheet metal all the way to road test.
As you may know Porsche expanded their capacity to produce PTS 4X over what it was previously without slowing production. The video Comments give the details:

In the Zuffenhausen plant where the 911, 718 and Taycan model lines are assembled, an additional color mixing bank added capacity to complete more Paint to Sample configurations without slowing production. “In reaction to demand, we made a big step now and went from five cars a day to 20 cars a day, which means 120 cars per calendar week from Paint to Sample,” said Boris Apenbrink, Head of Vehicles at Porsche Exclusive Manufaktur.

very green R

I watched and paused the Savage Geese video, with all its great detailed info, to see if battery weight was given on the enclosed Porsche Press slide presentation. Nothing there about battery weight savings. I have not heard or read about battery weight savings for the GT4RS anywhere. Whereas for the 992 GT3 the battery weight savings was provided in multiple sources. So even if the battery is different Porsche is not talking about it.

very green R

Speaking of weight savings the battery is sprung weight. Of much greater importance is unsprung static weight, and the most important area to save weight is unsprung rotating component mass, such as brake rotors and wheels. We knew for months from the Top Gear video that AP said the magnesium wheels save 10Kg or 22 pounds. So the Savage Geese video with the Porsche power point slides gives clarity over what some journalists have reported in their videos on PCCB weight savings as 33, 37, and 38 pounds. But Porsche in thier slide say that magnesium wheels and PCCB options together save 59.5 pounds, so 37.5 pounds for PCCB alone.. I consider this amount very significant, almost 15 pounds per corner with magnesium wheels and PCCB. Perhaps this is one way to make up performance gains for that 10HP loss compared to the 992 GT3, although an expensive way. But with additional benefits of steering feel, more consistent tire grip over uneven surfaces, better braking performance, and acceleration. This is probably one reason why Porsche equiped all press cars I saw in about 10 videos so far with PCCB brakes.

It is also interesting that Porsche reported a 0-60 mph time of 3.2 seconds. In a gray car with PCCB and aluminum wheels Car Wow got 3.3 seconds and RBR got 2.96 seconds.

KLCC 88

I honestly have considered the magnesium wheels. I might just get some bbs fir or bbs magnesium’s so that I would have a spare set of wheels if I stuck with the original alloys that comes with it. I selected the pccbs over magnesium wheels.

WirthO

Does anyone here track regularly with carbon brakes? I am at the track 6-8 times a year and can't see how that is feasible. I am going through a set of rotors and pads per year.

If you are tracking with carbons what is the expense? And are you tracking a lot?

ace37

A lot of heavy track users will buy a set of track rotors and pads and swap them.

I built a Spec Boxster and use that. Costs to race it really aren’t that bad when the main alternative is to do track days in a $150k+ street car.

jmartpr

I skipped PCCBs and Mags and will address the weight issues aftermarket.....will order APs Brake Kit, which will allow the use of 19" wheels, and do some custom Mag wheels, probably Lightspeed, in 19" and add the missing 0.5" width on the front.
If everything works out it should be lighter that the OEM setup, save the Forged wheels/tires just for street use, brake better, easier pad changes and better tire options...and I can go back to almost new stock brakes if I decide to sell down the line.