Breakdown over 24 second Nurburgring lap improvement 991.1 RS vs 991.2 RS
05-19-2018, 08:18 PM
#31
Rennlist Member
^this has been mentioned before, but are we sure .2 GT3 had the same compound tires as the RS running the Nurburgring? I suspect the .2 RS has/had the special compound tires regardless of the nomenclature.
05-19-2018, 09:02 PM
#32
Addict
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Rennlist Member
Correct, the RS had special R tires for the sub-7 minute lap. The standard tires for the RS are N2 which are same/similar rubber as N1 on GT3 now...
05-20-2018, 02:36 AM
#34
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I live in Luxembourg (Europe), about an hour’s drive from the Ring.
A friend of mine stopped over at Rinaldi Racing shortly after the record was set and a few pro drivers where there as well. Since he knows them and meets them regularly, they opened up and told him that the new tires were responsible for around 20 seconds...
Just word of mouth, of course, but as for me, I am very happy that I bought a second hand phase 1, instead of sheding 50k more an a phase 2.
Not that I will notice the difference anyhow
A friend of mine stopped over at Rinaldi Racing shortly after the record was set and a few pro drivers where there as well. Since he knows them and meets them regularly, they opened up and told him that the new tires were responsible for around 20 seconds...
Just word of mouth, of course, but as for me, I am very happy that I bought a second hand phase 1, instead of sheding 50k more an a phase 2.
Not that I will notice the difference anyhow
05-20-2018, 03:41 AM
#35
I live in Luxembourg (Europe), about an hour’s drive from the Ring.
A friend of mine stopped over at Rinaldi Racing shortly after the record was set and a few pro drivers where there as well. Since he knows them and meets them regularly, they opened up and told him that the new tires were responsible for around 20 seconds...
Just word of mouth, of course, but as for me, I am very happy that I bought a second hand phase 1, instead of sheding 50k more an a phase 2.
Not that I will notice the difference anyhow
A friend of mine stopped over at Rinaldi Racing shortly after the record was set and a few pro drivers where there as well. Since he knows them and meets them regularly, they opened up and told him that the new tires were responsible for around 20 seconds...
Just word of mouth, of course, but as for me, I am very happy that I bought a second hand phase 1, instead of sheding 50k more an a phase 2.
Not that I will notice the difference anyhow
Agree with your logic on gen1 vs gen2.
05-20-2018, 01:13 PM
#36
Rennlist Member
Thread Starter
What’s the weight difference between the .1 gt3 rs and the .2 gt3 rs/weissach/magnesium wheels?
Ive heard that the .1 is lighter even when the .2 is equipped with the weissach package.
Thanks!
Ive heard that the .1 is lighter even when the .2 is equipped with the weissach package.
Thanks!
05-20-2018, 01:37 PM
#37
Rennlist Member
Mine is 3220lb with 1/4 tank of fuel.
ST rotors, side muffler delete, and 19” Forgelines save a lot of weight.
Nothing removed otherwise; OEM battery, BBI roll bar, two 6 Point harnesses, full leather, wheel tool and manuals on board.
So it doesn’t take that much to get a .1RS below 3200.
ST rotors, side muffler delete, and 19” Forgelines save a lot of weight.
Nothing removed otherwise; OEM battery, BBI roll bar, two 6 Point harnesses, full leather, wheel tool and manuals on board.
So it doesn’t take that much to get a .1RS below 3200.
05-21-2018, 01:13 PM
#39
Rennlist Member
Thread Starter
I've looked at curb weights of the 2016 RS vs the 2019 RS with Weissach package and magnesium wheels. It appears that the '16 is lighter than the '19 even with these costly options on top by about 10lbs give or take.
So can we conclude if we took a stock '16 RS, threw on some PSC2R tires, installed an aftermarket track coilover suspension (to approximately double the spring rate at the front, 40% higher at the rear), with the same driver, same conditions that the 991.1 RS would get a lap time of about 7:03?
The difference of 7 seconds would be due to having 20hp less (3-4 second hit), less aggressive aero (2-3 second hit), and the other changes to the suspension. In other words, they're overall very similar cars.
So can we conclude if we took a stock '16 RS, threw on some PSC2R tires, installed an aftermarket track coilover suspension (to approximately double the spring rate at the front, 40% higher at the rear), with the same driver, same conditions that the 991.1 RS would get a lap time of about 7:03?
The difference of 7 seconds would be due to having 20hp less (3-4 second hit), less aggressive aero (2-3 second hit), and the other changes to the suspension. In other words, they're overall very similar cars.
05-21-2018, 01:26 PM
#40
Rennlist Member
FWIW,
At Sebring stock with side muffler delete I ran 2:15x.
GT3.2RS spring rates, diffuser, 19" forgeline lb? Hoosier R7 lb? and ST rotors VS steel lb? it runs 2:12x
The rotors by themselves were good for .5 seconds.
Weight is one thing of course and the other is center of gravity on 19", as well as Hoosier R7 grip VS N1, N2 and N2R in their prime...
I could insulate and split tire performance VS weight and ride height by raising the car up and run the N2 tires one day.
At Sebring stock with side muffler delete I ran 2:15x.
GT3.2RS spring rates, diffuser, 19" forgeline lb? Hoosier R7 lb? and ST rotors VS steel lb? it runs 2:12x
The rotors by themselves were good for .5 seconds.
Weight is one thing of course and the other is center of gravity on 19", as well as Hoosier R7 grip VS N1, N2 and N2R in their prime...
I could insulate and split tire performance VS weight and ride height by raising the car up and run the N2 tires one day.
05-21-2018, 06:24 PM
#41
Porsche had a few guys driving at the days of record trying laps. Conditions where very good. More laps recorded under 7min. Rumors are that some laps were “cleaner” than the one we have seen. But a couple of tenths slower. So record is a record. Hats off.
Suspension and tires on gen2 is the biggest improvement. HP maybe 2sec? Drivers are very consistent.
Gen 1 was harder to trust at the limit and was also driven in less than ideal conditions.
Gen2 gt3 and gen2 RS is a very nice evolution of already good cars.
The new tarmac in some key areas also makes a big difference. Maybe more than 2-3sec.
05-21-2018, 06:32 PM
#42
it was widely stated at launch the change in EU regs meant car kerb weights are not necessarily comparable. In some of the launch videos Preuninger did say the .2 rs like for like was lighter by 16kg or something like that iirc.
05-21-2018, 06:51 PM
#43
Rennlist Member
I’ll be driving mine at the Ring this week (Friday) and really looking forward to it. I’ll report back about my findings on the difference between the 2, from a mere mortal’s drivers seat 
05-22-2018, 05:56 AM
#44
I've looked at curb weights of the 2016 RS vs the 2019 RS with Weissach package and magnesium wheels. It appears that the '16 is lighter than the '19 even with these costly options on top by about 10lbs give or take.
So can we conclude if we took a stock '16 RS, threw on some PSC2R tires, installed an aftermarket track coilover suspension (to approximately double the spring rate at the front, 40% higher at the rear), with the same driver, same conditions that the 991.1 RS would get a lap time of about 7:03?
The difference of 7 seconds would be due to having 20hp less (3-4 second hit), less aggressive aero (2-3 second hit), and the other changes to the suspension. In other words, they're overall very similar cars.
So can we conclude if we took a stock '16 RS, threw on some PSC2R tires, installed an aftermarket track coilover suspension (to approximately double the spring rate at the front, 40% higher at the rear), with the same driver, same conditions that the 991.1 RS would get a lap time of about 7:03?
The difference of 7 seconds would be due to having 20hp less (3-4 second hit), less aggressive aero (2-3 second hit), and the other changes to the suspension. In other words, they're overall very similar cars.
Very interesting assumption!
05-22-2018, 11:13 AM
#45
Much of that’s due to the lithium battery, which is no longer available on the ‘19. Equipped with the same battery the ‘19 with Weissach will be considerably lighter.