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09-12-2019, 10:42 PM
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#1 |
 
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Tire pressures
Going to take the 19 ZLE out for its first autocross on Saturday that the local Porsche club is holding. Surface will be ragged(probably get a ton of front end push) since it’s at a high school drivers ed course. I’m curious where to start the Ps4 tires I have at for pressures. Temps will be bottom 90’s from what I see. While I’m an experienced driver(expired scale competition license) I haven’t done any serious track racing since about 2010. This will be my first “real” abuse on the new car and I would like to do my fellow domestic guys proud! lol
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2019 1LE
1970 Camaro touring car 1966 Buick Special pro touring build in-progress |
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09-13-2019, 02:33 PM
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#2 |
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Drives: Chevrolet Camaro ZL1 Join Date: Jul 2019
Location: Utah
Posts: 15
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I AX my ZL1 and run 33 front 31 rear.
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09-13-2019, 10:10 PM
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#3 | |
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Quote:
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2019 1LE
1970 Camaro touring car 1966 Buick Special pro touring build in-progress |
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09-14-2019, 12:28 AM
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#4 |
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Lover of Speed
Drives: 2018 ZLE Join Date: Feb 2016
Location: Phoenix
Posts: 274
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By time you start your first run though the tires will have cooled back off. I always prefer to enter the event high and air down before the first run. At 30/28 you are going to get lots of roll over. I have found the best for me is 33/31 hot for autocross and I go a little higher for track days.
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Killer Whale Racing
2021 One Lap of America Track Videos 2019 One Lap of America Track Videos 2017 One Lap of America Track Videos 2022 Ram TRX 2018 Camaro ZL1 1LE 2020 Range Rover Sport SVR (Sold) 2014 Grand Cherokee SRT (Sold) 2014 Camaro Z/28 (Sold) |
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09-14-2019, 07:13 AM
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#5 |
          
Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,824
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Try 32-33 starting psi and you should be fine. Road course is totally different with starting pressures.
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
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09-15-2019, 09:08 PM
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#6 |
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I didn’t get to go anyway so it was a lost cause. Woke up with a pretty bad pinched nerve in my neck and right shoulder. Didn’t think it would help wearing a helmet and tossing a car around. Still hurting from it so pretty much played couch potato all day. Oh well, probably saved me some fun for next round.
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2019 1LE
1970 Camaro touring car 1966 Buick Special pro touring build in-progress |
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