Consolidated 991RS thread
20 year dream finally came to fruition last October. 
03-05-2015, 01:50 PM
#6364
Rennlist Member
Manifold. rS4.0 would be nice but also think others thus price. But too valuable to track now. 7.2 RS can be bought same price as retail 991 GT3 still in NZ, still below new price by 20%. New RS will push market down a bit. Already trading out of old model started down under - when people clap eyes on real deal they will want want want. Suspect press will praise etc, also new with warranty for track help with well heeled track junkies. I believe there is a manual GT3 in the wings but cannot get any confirmation from PAG yet but will know more later in year. It may be a last gen special who knows but fact remains for ultimate stats PAG will keep RS PDk as option or mandatory for sure. Look towards RUF for final special iteration :-)
03-05-2015, 02:04 PM
#6365
Macca - I couldn't see the downforce delta in the tables you posted, unless I missed them? It's pretty massive from what I recall vs the 991 GT3 and I think this will be the big bringer of praise. It'll take everything that was liked about the GT3 up a notch - is that worth the price delta depends on the individual, but I still think the GT4 is the clear value buy of the current gen of GT cars.
PS: You're probably right on the Akra exhaust upgrade, but just don't tell my wife
PS: You're probably right on the Akra exhaust upgrade, but just don't tell my wife
03-05-2015, 02:06 PM
#6367
There's also the "collectability" feature of an announce 600 only, end of an era etc. cache surrounding the 997 4.0 GT3RS. The new cars production numbers and collectability cache seems to be a bit of an unknown quality so far. Lots of pre-sales hype, speculation, anticipation and clamor, little so far fact or hands on experience.
Just for quick ref: e.g. http://www.telegraph.co.uk/motoring/....0-review.html
And for w/in the RL community, see the https://rennlist.com/forums/997-gt2-...vs-gt3-rs.html thread
Last edited by mlpor; 03-05-2015 at 02:23 PM. Reason: add reference link
03-05-2015, 02:17 PM
#6368
Assuming the graphs are correct, my interpretation:
- In 1st to 5th gear, GT3 has stronger acceleration in lower half of the rev range, RS is stronger in upper half.
- In 6th and 7th, GT3 has stronger acceleration.
- Since max overall acceleration uses the upper half of the rev range, RS should be faster, but might feel a bit weaker in more normal driving (which doesn't really make sense to me).
- In 1st to 5th gear, GT3 has stronger acceleration in lower half of the rev range, RS is stronger in upper half.
- In 6th and 7th, GT3 has stronger acceleration.
- Since max overall acceleration uses the upper half of the rev range, RS should be faster, but might feel a bit weaker in more normal driving (which doesn't really make sense to me).
In 1-4 the GT3 should be quicker, in the lower rpm range the RS quicker in the upper rpm range, no surprise as the torque is similar down low w/ the RS excelling up high and weight of GT3 is not much more and aero hasn't become a huge factor
in 5-7 the same holds true in the llower rpm range but aero is becoming a much bigger factor, the RS torque advantage doesn't over come it
03-05-2015, 02:30 PM
#6369
Rennlist Member
Macca - I couldn't see the downforce delta in the tables you posted, unless I missed them? It's pretty massive from what I recall vs the 991 GT3 and I think this will be the big bringer of praise. It'll take everything that was liked about the GT3 up a notch - is that worth the price delta depends on the individual, but I still think the GT4 is the clear value buy of the current gen of GT cars. PS: You're probably right on the Akra exhaust upgrade, but just don't tell my wife
An RS is always an RS tho!!
03-05-2015, 02:33 PM
#6370
Rennlist Member
Macca - I couldn't see the downforce delta in the tables you posted, unless I missed them? It's pretty massive from what I recall vs the 991 GT3 and I think this will be the big bringer of praise. It'll take everything that was liked about the GT3 up a notch - is that worth the price delta depends on the individual, but I still think the GT4 is the clear value buy of the current gen of GT cars. PS: You're probably right on the Akra exhaust upgrade, but just don't tell my wife
03-05-2015, 02:47 PM
#6371
Correcting for speed this suggests the 991 GT3 RS makes almost exactly 3x the downforce of the GT3, with the aero balance shifting slightly to the rear (32% front dowforce for the RS vs 38% front downforce for the GT3). This should increase high speed stability somewhat.
03-05-2015, 02:58 PM
#6372
RL Community Team
Rennlist Member
Rennlist Member
Looking at the tables of info Macca provided, seems that the changes between the GT3 and RS are fairly limited, with not much extra development and cost invested in the engine, transmission, suspension, steering, etc.
At this point, with no reviews out yet on the RS, I can't say I significantly prefer the RS, even if cost isn't a factor. Front fender vents look increasingly tacky to me, rear vents look too much like the turbo, negligible net weight reduction, pit speed limiter is amusing but not useful, dub+1 in the back seems like overkill, and 5s faster at the 'ring isn't that big a deal. Then add that it might feel more sluggish on the road than GT3, and loses 200 rpm at the top. Not saying the RS isn't a great car, but at this point I have no lust for it, considering I have a GT3 already in the garage.
At this point, with no reviews out yet on the RS, I can't say I significantly prefer the RS, even if cost isn't a factor. Front fender vents look increasingly tacky to me, rear vents look too much like the turbo, negligible net weight reduction, pit speed limiter is amusing but not useful, dub+1 in the back seems like overkill, and 5s faster at the 'ring isn't that big a deal. Then add that it might feel more sluggish on the road than GT3, and loses 200 rpm at the top. Not saying the RS isn't a great car, but at this point I have no lust for it, considering I have a GT3 already in the garage.
Reminds me quite a bit of what GM did with the C7 Vette.
03-05-2015, 03:01 PM
#6373
Rennlist Member
I'll try and confirm later today. There are also two settings for rear wing on GT3 but I don't have any data on the more aggressive setting would suggest not much difference till after 300 kmph.
Lastly what's the relationship between speed and downforce?
I ask because RS slide shows headline numbers at 300 kmph only 4% shy of Vmax but I can never drive that fast and my tracks probably Max Vmax 240 kmph - most track work and fast sweepers here less than 200 kmph...
Lastly what's the relationship between speed and downforce?
I ask because RS slide shows headline numbers at 300 kmph only 4% shy of Vmax but I can never drive that fast and my tracks probably Max Vmax 240 kmph - most track work and fast sweepers here less than 200 kmph...
03-05-2015, 03:04 PM
#6374
Sport Auto measured the 991 GT3 at 18kg downforce front, 29 kg rear at 200 km per hour.
Correcting for speed this suggests the 991 GT3 RS makes almost exactly 3x the downforce of the GT3, with the aero balance shifting slightly to the rear (32% front dowforce for the RS vs 38% front downforce for the GT3). This should increase high speed stability somewhat.
Correcting for speed this suggests the 991 GT3 RS makes almost exactly 3x the downforce of the GT3, with the aero balance shifting slightly to the rear (32% front dowforce for the RS vs 38% front downforce for the GT3). This should increase high speed stability somewhat.
EDIT: Just saw Macca's post above, same question.
03-05-2015, 03:05 PM
#6375
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Sport Auto measured the 991 GT3 at 18kg downforce front, 29 kg rear at 200 km per hour.
Correcting for speed this suggests the 991 GT3 RS makes almost exactly 3x the downforce of the GT3, with the aero balance shifting slightly to the rear (32% front dowforce for the RS vs 38% front downforce for the GT3). This should increase high speed stability somewhat.
Correcting for speed this suggests the 991 GT3 RS makes almost exactly 3x the downforce of the GT3, with the aero balance shifting slightly to the rear (32% front dowforce for the RS vs 38% front downforce for the GT3). This should increase high speed stability somewhat.