07-30-2019, 06:04 AM | #1 |
Drives: Rally Green 2020 ZL1 1LE A10 Join Date: Jul 2018
Location: Jacksonville Florida
Posts: 402
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Tire Pressure on Track Question
When I was at Daytona last my tires never reached the targeted pressure per the performance supplement. 35-37psi. Temps were also shown in the green and normal. I believe I started at 30 PSI in all.
I'm assuming because I was not driving hard enough to build up enough pressure in them. I'm going back Thursday. Is it that important to be at the targeted pressure as opposed to 34 or 35 psi? I'm going to start with 32 psi this time and air down if I go over 37 but just curious if a pound or two lower makes a difference to what I'm feeling at a big open fast track like Daytona. FYI on the other hand at the Firm I had no issue hitting the targeted pressures and "warm" temps. Just curious how much I should focus on the tire pressures if I'm not reaching the targets at a place like Daytona. Thanks |
07-30-2019, 06:40 AM | #2 | |
Drives: '19 ZL1 1LE Join Date: Feb 2019
Location: DFW, TX
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07-30-2019, 10:20 AM | #3 | |
Drives: ISO ss 1le Join Date: May 2018
Location: FL
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Quote:
Let's not even talk about the third Anyhow, you shouldn't have anything to worry about reaching 35 from 30 on a warm dry track in august. Also, the dash pressures run a little low anyhow. i would invest in a good tire gauge and pull temps as soon as your back in the paddock, or in TNIA's case, pit row. lol |
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07-30-2019, 10:26 AM | #4 |
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i heard to start at 28psi on the big tracks
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07-30-2019, 10:28 AM | #5 |
Drives: 2019 CLA 450 Mercedes Join Date: May 2016
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I have run in cold temperatures (cooler than you would like for sure). On one weekend, you could lay your hand on the tarmac and not even feel any heat. The track was a bit slippery as were the tires. I actually added air over the course of the event.
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07-30-2019, 02:05 PM | #6 | |
Drives: Rally Green 2020 ZL1 1LE A10 Join Date: Jul 2018
Location: Jacksonville Florida
Posts: 402
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Quote:
Ill start out at 30-32 and go from there. I also have a feeling that I wasn't really using the car hard enough cornering. Now that ive been there and also have a few more track days under my belt since, ill be more comfortable driving a bit more aggressively. Ill make it a point to get in the 36 37 PSI range for sure then. Thanks for all the responses! |
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07-30-2019, 07:01 PM | #7 |
Drives: 2020 SS 1LE (previous: 2017 SS 1LE) Join Date: Mar 2012
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Target psi notwithstanding, look at a tire wear as your guide. If it doesn't reach the GoodYear booties you're over inflated. If it starts going beyond them: add 1 or 2 psi. IMO it all depends on temps, track, pace, etc.
I start at 28 psi then adjust hot pressure based on wear. Even if a target might be 36, sometimes a bit lower works better (depending on circumstances). So, it is key to take pressure reading right after a run and check tire wear on sidewalls. Cheers! |
07-30-2019, 07:35 PM | #8 | |
Drives: ISO ss 1le Join Date: May 2018
Location: FL
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I won’t be attending this go around. Last time left such a bad taste in my mouth with the paddock area and how they handled trailers and spare parts and stuff. Anyhow, have fun! Let me know next time you get to the firm, i need to get there sometime soon! |
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07-30-2019, 11:14 PM | #9 |
Drives: 1LE Join Date: Sep 2017
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85 ambient temps I start with 22 rear and 24 front. Hoosier R7. After hard 20 25 min session I see 30 to 33 psi
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07-31-2019, 12:48 AM | #10 | |
Drives: Track prepped 2018 Camaro ZL1 (a10) Join Date: Aug 2013
Location: Victoria B.C. Canada
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Quote:
I saw those Goodyear boot images but didn't know what they were for especially since they don't seem to be consistently in the same location along the edge of the tire.
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07-31-2019, 06:35 AM | #11 | |
Drives: Rally Green 2020 ZL1 1LE A10 Join Date: Jul 2018
Location: Jacksonville Florida
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Quote:
I know there was a weekend SCCA event when we were there and the garages were being used. Curious if itll be different tomorrow. Ill go again to the Firm in September I think. Ill post in this forum when I plan on going. Yes the wear line to be at the top of the wing on the boot was/is the goal for proper inflation is what Im shooting for. |
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07-31-2019, 06:37 AM | #12 | |
Drives: Rally Green 2020 ZL1 1LE A10 Join Date: Jul 2018
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07-31-2019, 07:55 AM | #13 | |
Drives: 2018 ZL1 1LE Join Date: May 2019
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Yes, you made a whole thread about that exact topic about a month ago where it was answered. If youre reaching the edge youre under inflated.
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08-01-2019, 01:43 AM | #14 | |
Drives: Track prepped 2018 Camaro ZL1 (a10) Join Date: Aug 2013
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Quote:
*UPDATE EDIT* I rechecked the thread and it looks like I missed the part on the Goodyear boot symbol (even though I quoted it) it also looks like more answers were added to the thread that I had not seen and they include more about the Goodyear Boot symbol.
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