12-17-2023, 09:46 PM | #1 |
Drives: 2017 ZL1 Join Date: Aug 2020
Location: Lakeside, Az
Posts: 496
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What pressure do you run in your DR’s?
Been experimenting and 15.5 was certainly too low but 17-18 seemed good for the qtr but had to bump that up to at least 20psi for the 1/2 mile or car wanted to move the back end around too much, Running MT’s 17’s.
Last edited by dbs1; 12-19-2023 at 10:25 PM. |
12-17-2023, 09:48 PM | #2 |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 5,122
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Not sure what size DRs you’re running, but I ended up having to air up my 325/50/15. Got way too loose at the top end in the 16-17 pound range, now I run 20-21.
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
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12-18-2023, 07:56 AM | #3 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,953
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drag radials generally like to be in the 20-23psi range. You are down in bias ply slicks territory.
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2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
12-18-2023, 08:49 AM | #4 |
I run 16.5lbs in my Hoosier drag bracket radials, these are 17 inch 28-10.5 tire.
The 15 inch I just installed I am gonna try and start higher and see how it goes, 18-19? The higher the better, as long as it hooks of course.
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2019 COPO #32
427 NA 9.38 142MPH 2018 ZL1-NFG-A10 388CI L8T 9.32 147MPH |
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12-18-2023, 09:29 AM | #5 |
Drives: 2017 Chevrolet Camaro ZL1 Join Date: Jul 2018
Location: Canton, GA
Posts: 452
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21 cold is where I start the day and adjust up or down based on conditions.
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2017 ZL1 - PB 7.85 @ 175 MPH @ 3682 lbs @ 1313 DA (work in progress)
Built by Vengeance Racing, tuned by Elite Tuned |
12-19-2023, 10:25 PM | #6 |
Drives: 2017 ZL1 Join Date: Aug 2020
Location: Lakeside, Az
Posts: 496
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Thanks for the input guys!
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12-20-2023, 08:03 AM | #7 |
Drives: 98 Camaro Join Date: Apr 2022
Location: MD
Posts: 274
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Generally the heavier the car the higher pressure needed. The better the surface the more pressure you can run. I run 17-17.5 psi in my racecar which is 3000lbs. I run 19-20psi in my 6th gen. Run a touch less if it’s a not so great surface.
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