01-06-2013, 12:51 PM | #1 |
Est.1775
Drives: '15 Challenger Hellcat (sold) Join Date: Sep 2009
Location: SoCal
Posts: 5,502
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What PSI are you guys running in your 1LE tires?
I noticed my tire pressure yesterday. Dealer apparently put 30psi in the front and 35 in the rear. The max psi on tires say 51.
What are you guys running? |
01-06-2013, 01:12 PM | #2 | |
SoCal Mayhem
Drives: 2010 Camaro 1SS/RS Join Date: Aug 2008
Location: Foothill Ranch, CA
Posts: 5,488
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I'm curious about this as well since I put 1LE wheels on my 2010.
What does the Tire and Loading Information Label say the pressure should be? Quote:
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01-06-2013, 01:13 PM | #3 |
King of All
Drives: 2014 Summit White Z28 #275 Join Date: Dec 2012
Location: Oklahoma City, OK
Posts: 202
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Recommended psi is 32lbs each tire.
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01-06-2013, 01:18 PM | #4 |
knows 2 facts about ducks
Drives: ...and they're both wrong Join Date: Aug 2009
Location: The HMS Invincible
Posts: 25,072
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Is that per the Owner's Manual?
I just ask because I haven't gotten the chance to read a ZL1 and/or 1LE Owner's Manual. I wonder why they aren't recommending 36 like the rest of the Camaro 20 inch wheels? |
01-06-2013, 01:27 PM | #5 | |
Drives: 2011 2SS/RS M6 VR Join Date: Aug 2011
Location: Chicagoland
Posts: 1,536
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Quote:
Sent from my DROID RAZR using Tapatalk 2
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01-06-2013, 01:32 PM | #6 |
King of All
Drives: 2014 Summit White Z28 #275 Join Date: Dec 2012
Location: Oklahoma City, OK
Posts: 202
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Cold Tire Pressure as per my driver side door jamb says 32lbs. But I have my owners manual open now to double check..
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01-06-2013, 01:37 PM | #7 |
Drives: 2013 1LE, 2004 Silverado Join Date: Sep 2012
Location: East Bay, California
Posts: 368
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My onstar app recommends 32psi all around.
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01-06-2013, 01:42 PM | #8 |
King of All
Drives: 2014 Summit White Z28 #275 Join Date: Dec 2012
Location: Oklahoma City, OK
Posts: 202
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01-06-2013, 01:54 PM | #9 |
Est.1775
Drives: '15 Challenger Hellcat (sold) Join Date: Sep 2009
Location: SoCal
Posts: 5,502
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Interesting, I hadn't checked the owners manual as I'm out of town for a few days. Thanks for the info! With 32psi being the recommended pressure now I'm curious to know why the max is 51psi for the 285/35/20 OEM tires 51psi is just insane.
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01-06-2013, 02:06 PM | #10 | |
knows 2 facts about ducks
Drives: ...and they're both wrong Join Date: Aug 2009
Location: The HMS Invincible
Posts: 25,072
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Quote:
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01-07-2013, 02:54 AM | #11 |
Drives: no camaro Join Date: Oct 2011
Location: Holland
Posts: 7
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For determinating tire-pressure-advice, the tire-and car-makers use a formula that I got hold of once and went running with.
For normal cars the European formula , wich is also used in America for normal ( P-tires) and XL( reinforced,extraload) since 2005, is proven save . But before 2005 in America a formula was used that came to lower pressures and so more deflection of the tire then it can savely stand. So you see that there is more to tell about tire-pressure. But now the formula. In this formula the actual load on the tire is used, also with the maximum load and maxloadpressure ( wich is not the maximum pressure) of the tire. This maxloadpressure is called the reference-pressure in the formula( further Pr). Pr has to be highenend up for higher speed then mostly the reference-speed of 160km/99m/h. Seldomly used is the camber angle( alighnment tires like this on the axle/-\ instead of |-|) wich also highenes up the Pr but only above 2degr . So If you can give me the GAWR's ( gross axle weight ratings) and type of tire for the Pr, I can calculate a save lowest to use pressure for fully loaded. Also maximum speed of the car ( or fastest you ever ride) is usefull. And if you have low aspect ratio tires ( =AR the 40 in fi 235/40 ZR 18 92 W) the Pr has to be highened up to , or the maximum load of the tire has to be lowered. This is a thing I lately discovered, so also give the exact sises like written above with the Loadindex ( 92) and speedcode letter ( W). Ten I can judge the correction for low AR. If you can give the empty weight and weight devision front/back , and the way you normaly load the car, I can calculate a normal-use advice. Mind then that the actuall weights are easyly misyudged, weighing would be the most shure. Last edited by jadatis; 01-07-2013 at 02:55 AM. Reason: subscribing forgotten |
01-07-2013, 03:26 AM | #12 |
Drives: 98 Camaro SS Join Date: Nov 2012
Location: Northern California
Posts: 461
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I would run 32 in front and 45 in back and see what happens. Since the car has a little understeer this might balance it out a little. I admit I am just guessing here.
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98 Camaro SS M6, a few mods
13 Ram R/T, tow vehicle 6th gen?? |
01-08-2013, 09:09 AM | #13 |
2013 Camaro SS1LECTSVZ28
Drives: 2013 AGM 1SS/1LE Join Date: Nov 2012
Location: Suburbs of Detroit, MI
Posts: 2,440
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...and the first crashed 1LE is in ....3....2......1....seconds after you enter the first turn on the street with cold tires
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01-08-2013, 09:37 AM | #14 |
Drives: 2021 1LE Join Date: Jul 2011
Location: N'Awlinz
Posts: 6,315
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30 cold... I like it a bit squishy. They climb to about 34 with a few minutes of interstate driving.
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