Track Day Info 991.1 GT3
#1
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Thread Starter
Track Day Info 991.1 GT3
Ok I know I am going to get spanked with the "use search" on this. However I did. There is a lot of contradictory info about each topic, so hopefully having them all in one place will help future track day users like myself, easily access the info.
I have 20+ years of track day experience, however I have my first day coming up with a 991.1 GT3. I would GREATLY appreciate any current and past owners sharing their wisdom on the following:
South Florida Track Day. Warm Temps.
1. PDK Sport Button ON or OFF in Manual mode ?
2. Suspension Button ON or OFF ? (And if possible Why).
3. Suggested Starting Pressures for Cup 2 Tires.
4. Ideal operating temps for Cup 2's.
5. Anything else I SHOULD know, that I did not ask.
Thank you in advance for helping take any unnecessary anxiety out of an otherwise fun track day !!
Cheers
I have 20+ years of track day experience, however I have my first day coming up with a 991.1 GT3. I would GREATLY appreciate any current and past owners sharing their wisdom on the following:
South Florida Track Day. Warm Temps.
1. PDK Sport Button ON or OFF in Manual mode ?
2. Suspension Button ON or OFF ? (And if possible Why).
3. Suggested Starting Pressures for Cup 2 Tires.
4. Ideal operating temps for Cup 2's.
5. Anything else I SHOULD know, that I did not ask.
Thank you in advance for helping take any unnecessary anxiety out of an otherwise fun track day !!
Cheers
#2
It's been a few years since I tracked a 991.1. But when I did I used PDK sport in auto mode. Just less to think about and the PDK does a good job. Sometimes I would manually short shift up such as in a high speed sweeper to settle the car and make it less "twitchy" for my modest skills.
I used suspension in sport as it feels firmer, less roll and quicker response to inputs. If it was wet I used normal mode to soften up and improve grip. I always left esc and tc on. I had the bars at middle both front and rear.
With Cup 2 I used circuit mode for tpms and usually started at 27/28 and bled down as needed to about 32/34 hot. (Michelin recommends not starting below 28psi.) I think pressure is a bit of a personal choice though. I found at 36 and above the rears would feel greasy. For temps as best I can recall about 180F is in the optimum window. I didn't use a pyrometer, but used a rough rule of thumb of +10F for each 0.7 psi pressure rise. So if ambient is 80, I want about 100F rise or +7psi. So starting at 27/28 would be in the ballpark. One annoying thing about tmps circuit mode is you need to select it everytime you start the car again.
I tried to do an easy warm up for the first session and especially a cool down every session.
Other- high temp brake fluid, Torque wrench, breaker, optimol, jack for the CL bolts. Follow the procedure for torqueing and check that the locks are engaged.
Hope that is useful.
I used suspension in sport as it feels firmer, less roll and quicker response to inputs. If it was wet I used normal mode to soften up and improve grip. I always left esc and tc on. I had the bars at middle both front and rear.
With Cup 2 I used circuit mode for tpms and usually started at 27/28 and bled down as needed to about 32/34 hot. (Michelin recommends not starting below 28psi.) I think pressure is a bit of a personal choice though. I found at 36 and above the rears would feel greasy. For temps as best I can recall about 180F is in the optimum window. I didn't use a pyrometer, but used a rough rule of thumb of +10F for each 0.7 psi pressure rise. So if ambient is 80, I want about 100F rise or +7psi. So starting at 27/28 would be in the ballpark. One annoying thing about tmps circuit mode is you need to select it everytime you start the car again.
I tried to do an easy warm up for the first session and especially a cool down every session.
Other- high temp brake fluid, Torque wrench, breaker, optimol, jack for the CL bolts. Follow the procedure for torqueing and check that the locks are engaged.
Hope that is useful.
The following 5 users liked this post by zedcat:
atc5 (03-28-2021),
Captain_ (04-01-2021),
IslandBoy (03-26-2021),
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SterlingatBOM (03-25-2021)
#3
Agree with Zedcat. Don’t overthink it. I’d be in PDK sport and chose auto or manual depending upon my comfort level at the track. Dampers are also track dependent. At my local track I can carry more speed through a smooth sweeper but am not necessarily faster as it’s a bumpy track and I prefer it off over the bumps. In my experience the dampers on or off is not that big of a difference. Enjoy the car. Try all the settings and choose the ones you like.
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IslandBoy (03-26-2021)
#4
At manual it doesn't matter if PDK Sport or not. I like Spiort Mode in automatik and shift down manually with the paddels, upshifts are automatic at the perfect RPM.
Suspension depends on the track. Stiff isnÄt fast but feels better. Just try it.
Tires 2.2 Bar.
Suspension depends on the track. Stiff isnÄt fast but feels better. Just try it.
Tires 2.2 Bar.
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IslandBoy (03-26-2021)
#5
Sport button on - check
exhause button on - check
suspension button on - check
a/c off - check
front tires @ 25psi - check
rear tires @ 24 psi - check
automatic shifting - check
aims set - check
windows down- check
oil Level at top- check
helmet straps secured - check
center locks torqued and locked - check
HANS strapped tight - check
6 pt harness secured - check
nothing in car - check
exhause button on - check
suspension button on - check
a/c off - check
front tires @ 25psi - check
rear tires @ 24 psi - check
automatic shifting - check
aims set - check
windows down- check
oil Level at top- check
helmet straps secured - check
center locks torqued and locked - check
HANS strapped tight - check
6 pt harness secured - check
nothing in car - check
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#6
I recommend bringing a quart of oil too. Never know when you'll get that warning light. I just had it happen to me mid-way through a track day and luckily I brought oil or else I would've been done.
#7
Rennlist Member
Sport button on - check
exhause button on - check
suspension button on - check
a/c off - check
front tires @ 25psi - check
rear tires @ 24 psi - check
automatic shifting - check
aims set - check
windows down- check
oil Level at top- check
helmet straps secured - check
center locks torqued and locked - check
HANS strapped tight - check
6 pt harness secured - check
nothing in car - check
exhause button on - check
suspension button on - check
a/c off - check
front tires @ 25psi - check
rear tires @ 24 psi - check
automatic shifting - check
aims set - check
windows down- check
oil Level at top- check
helmet straps secured - check
center locks torqued and locked - check
HANS strapped tight - check
6 pt harness secured - check
nothing in car - check
Trending Topics
#8
Thank you for posting OP! I'm in the same boat and this has helped a lot.
Only other question I have"
I'm used to Nitto NTO1s on my 997 Carrera S. Does anyone know how the Cutp 2 grip will compare?
Only other question I have"
I'm used to Nitto NTO1s on my 997 Carrera S. Does anyone know how the Cutp 2 grip will compare?
Last edited by M3 Defector; 03-26-2021 at 03:11 PM.
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IslandBoy (03-26-2021)
#9
Addict
Rennlist Member
Rennlist Member
Cups are a bit stickier (NT01 is a nice progressive tire that lasts pretty long - Cups are a bit faster, not quite as friendly at the limit, and not quite as long lasting)
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#10
Nordschleife Master
Ok I know I am going to get spanked with the "use search" on this. However I did. There is a lot of contradictory info about each topic, so hopefully having them all in one place will help future track day users like myself, easily access the info.
I have 20+ years of track day experience, however I have my first day coming up with a 991.1 GT3. I would GREATLY appreciate any current and past owners sharing their wisdom on the following:
South Florida Track Day. Warm Temps.
1. PDK Sport Button ON or OFF in Manual mode ?
2. Suspension Button ON or OFF ? (And if possible Why).
3. Suggested Starting Pressures for Cup 2 Tires.
4. Ideal operating temps for Cup 2's.
5. Anything else I SHOULD know, that I did not ask.
Thank you in advance for helping take any unnecessary anxiety out of an otherwise fun track day !!
Cheers
I have 20+ years of track day experience, however I have my first day coming up with a 991.1 GT3. I would GREATLY appreciate any current and past owners sharing their wisdom on the following:
South Florida Track Day. Warm Temps.
1. PDK Sport Button ON or OFF in Manual mode ?
2. Suspension Button ON or OFF ? (And if possible Why).
3. Suggested Starting Pressures for Cup 2 Tires.
4. Ideal operating temps for Cup 2's.
5. Anything else I SHOULD know, that I did not ask.
Thank you in advance for helping take any unnecessary anxiety out of an otherwise fun track day !!
Cheers
Last edited by Palting; 03-26-2021 at 03:25 PM.
The following users liked this post:
IslandBoy (03-26-2021)
#11
Advanced
Thread Starter
Thank you VERY much Zedcat for taking the time to share. That was VERY helpful !!
Thank you also to everyone else who chimed in .......
Now that I have some great
setting info, i can just look forward to the driving part, and having a blast!
Thank you also to everyone else who chimed in .......
Now that I have some great
setting info, i can just look forward to the driving part, and having a blast!
It's been a few years since I tracked a 991.1. But when I did I used PDK sport in auto mode. Just less to think about and the PDK does a good job. Sometimes I would manually short shift up such as in a high speed sweeper to settle the car and make it less "twitchy" for my modest skills.
I used suspension in sport as it feels firmer, less roll and quicker response to inputs. If it was wet I used normal mode to soften up and improve grip. I always left esc and tc on. I had the bars at middle both front and rear.
With Cup 2 I used circuit mode for tpms and usually started at 27/28 and bled down as needed to about 32/34 hot. (Michelin recommends not starting below 28psi.) I think pressure is a bit of a personal choice though. I found at 36 and above the rears would feel greasy. For temps as best I can recall about 180F is in the optimum window. I didn't use a pyrometer, but used a rough rule of thumb of +10F for each 0.7 psi pressure rise. So if ambient is 80, I want about 100F rise or +7psi. So starting at 27/28 would be in the ballpark. One annoying thing about tmps circuit mode is you need to select it everytime you start the car again.
I tried to do an easy warm up for the first session and especially a cool down every session.
Other- high temp brake fluid, Torque wrench, breaker, optimol, jack for the CL bolts. Follow the procedure for torqueing and check that the locks are engaged.
Hope that is useful.
I used suspension in sport as it feels firmer, less roll and quicker response to inputs. If it was wet I used normal mode to soften up and improve grip. I always left esc and tc on. I had the bars at middle both front and rear.
With Cup 2 I used circuit mode for tpms and usually started at 27/28 and bled down as needed to about 32/34 hot. (Michelin recommends not starting below 28psi.) I think pressure is a bit of a personal choice though. I found at 36 and above the rears would feel greasy. For temps as best I can recall about 180F is in the optimum window. I didn't use a pyrometer, but used a rough rule of thumb of +10F for each 0.7 psi pressure rise. So if ambient is 80, I want about 100F rise or +7psi. So starting at 27/28 would be in the ballpark. One annoying thing about tmps circuit mode is you need to select it everytime you start the car again.
I tried to do an easy warm up for the first session and especially a cool down every session.
Other- high temp brake fluid, Torque wrench, breaker, optimol, jack for the CL bolts. Follow the procedure for torqueing and check that the locks are engaged.
Hope that is useful.
#12
Not to derail this thread but on the topic of high temp brake fluid, is that something that should be changed back to regular brake fluid after track day? I drive my car maybe 4 times a month for a few miles so unless it's necessary I might just keep it.
#14
#15
Rennlist Member
Use SRF and just flush once a year