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Best Track Time in a 718 GT4

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Old 06-22-2021, 10:15 PM
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clib
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Road America june 21/22 with Nordstern PCA club.
Just getting used to the car. MT, All stock except a harness bar. Michelin tires and aligned as it came from the factory to get initial feel then tweek. Car is really great.
My son was consistently doing 2:40 in the Cayman R




Old 06-23-2021, 10:51 PM
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porscheflat6
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Hallett Raceway in Oklahoma 6/23/21
Dry and perfect 80 degree with slight breeze
BBi Street Cup Suspension
DSC Module and Track Alignment
Apex 19x9 265/35 and 19x11 295/35 Hoosier R7 DOT slicks
JCR Full Monty: Headers, Race Cats and Silenced Race Pipes

1:21:25 best lap time

will post up some video shortly







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Old 06-23-2021, 11:00 PM
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TRZ06
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Originally Posted by porscheflat6
Hallett Raceway in Oklahoma 6/23/21
Dry and perfect 80 degree with slight breeze
BBi Street Cup Suspension
DSC Module and Track Alignment
Apex 19x9 265/35 and 19x11 295/35 Hoosier R7 DOT slicks
JCR Full Monty: Headers, Race Cats and Silenced Race Pipes

1:21:25 best lap time

will post up some video shortly






What is BBi Street Cup Suspension?
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electron mike (06-25-2021)
Old 06-23-2021, 11:02 PM
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Holy Crap @porscheflat6 , those are some insane G's. Can't wait to the videos and read more about your setup. Wow.
Old 06-23-2021, 11:12 PM
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ExMB
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Originally Posted by porscheflat6
Hallett Raceway in Oklahoma 6/23/21
Dry and perfect 80 degree with slight breeze
BBi Street Cup Suspension
DSC Module and Track Alignment
Apex 19x9 265/35 and 19x11 295/35 Hoosier R7 DOT slicks
JCR Full Monty: Headers, Race Cats and Silenced Race Pipes

1:21:25 best lap time

will post up some video shortly






I hate you and your cheater tires.
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porscheflat6 (06-23-2021)
Old 06-23-2021, 11:33 PM
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Originally Posted by ExMB
I hate you and your cheater tires.
LOL wait till I stop driving my mid-engine like a rear-engine 911. I think sub 1:20 is in the cards at my current set-up.

Last edited by porscheflat6; 06-23-2021 at 11:37 PM.
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Old 06-23-2021, 11:33 PM
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Old 06-23-2021, 11:37 PM
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Old 06-24-2021, 01:44 PM
  #54  
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Originally Posted by porscheflat6
LOL wait till I stop driving my mid-engine like a rear-engine 911. I think sub 1:20 is in the cards at my current set-up.
interested in getting some 19 track wheels. Have you been happy with the apex wheels? Any fitment issues (i will likely stay w stick suspension except whats needed for track oriented alignment.
thank you!

Old 06-24-2021, 02:38 PM
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Originally Posted by clib
interested in getting some 19 track wheels. Have you been happy with the apex wheels? Any fitment issues (i will likely stay w stick suspension except whats needed for track oriented alignment.
thank you!
I have been on 19" for the past 8 years for all my GT cars. I typically use Forgeline but tried Apex his time and so far great track wheels for the money. I did not feel any wheel flex in the high G corners so very please. I also have 11" rear so I can run 305/30 rear and they clear nicely with no rubbing.
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Old 06-24-2021, 06:07 PM
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Originally Posted by porscheflat6
I have been on 19" for the past 8 years for all my GT cars. I typically use Forgeline but tried Apex his time and so far great track wheels for the money. I did not feel any wheel flex in the high G corners so very please. I also have 11" rear so I can run 305/30 rear and they clear nicely with no rubbing.
much appreciated.
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porscheflat6 (06-24-2021)
Old 06-24-2021, 06:49 PM
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Old 06-25-2021, 11:10 AM
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Originally Posted by porscheflat6
I have been on 19" for the past 8 years for all my GT cars. I typically use Forgeline but tried Apex his time and so far great track wheels for the money. I did not feel any wheel flex in the high G corners so very please. I also have 11" rear so I can run 305/30 rear and they clear nicely with no rubbing.
what are your thoughts on a 315/30/19 fitting on the rears? I've been running 305/30/19s in Bridgestone, Nankang, and soon Falkens, but looking at running Hoosier A7s for autocross in the near future, and the 315/30/19 looks appealing.

Ron
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Old 06-25-2021, 11:28 AM
  #59  
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Originally Posted by ronbauer
what are your thoughts on a 315/30/19 fitting on the rears? I've been running 305/30/19s in Bridgestone, Nankang, and soon Falkens, but looking at running Hoosier A7s for autocross in the near future, and the 315/30/19 looks appealing.
My 305/30R19 AR-1s are rubbing just a bit. Depending on your wheels, alignment settings, and the specific tire, 315 might not be possible.



APEX SM-10 (19x11 ET46), -2.2° camber, +2.2mm toe per side.
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Old 06-25-2021, 11:55 AM
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Originally Posted by sobiloff
My 305/30R19 AR-1s are rubbing just a bit. Depending on your wheels, alignment settings, and the specific tire, 315 might not be possible.



APEX SM-10 (19x11 ET46), -2.2° camber, +2.2mm toe per side.
Thanks for the information. I'm running in "Stock" class, so can only get around -1.8 camber in the rear, and haven't seen any rubbing with the CR1 or RE71R at this point. I have two sets of BC Forged wheels, one with a 47 offset and one with a 44 offset. It appears that it'd definitely be close, especially with the 47mm offset set. (And just to be clear, based on your picture, it's rubbing on the inside, correct?)

Ron


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