Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
 
SNL Performance
Go Back   Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com > Specific Models / Packages > Camaro 1LE Forum

Camaro 1LE Forum Camaro 1LE Package releated discussions

Reply
 
Thread Tools
Old 01-06-2013, 01:51 PM   #1
FINALLYSATISFIED
Est.1775
 
FINALLYSATISFIED's Avatar
 
Drives: ZL1#206 (Sold) 6th Gen!?
Join Date: Sep 2009
Location: SoCal
Posts: 5,416
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?
FINALLYSATISFIED is offline   Reply With Quote
Old 01-06-2013, 02:12 PM   #2
slick rick
SoCal Mayhem
 
slick rick's Avatar
 
Drives: 2010 Camaro 1SS/RS
Join Date: Aug 2008
Location: Foothill Ranch, CA
Posts: 5,464
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:
A vehicle-specific Tire and Loading Information label is attached to the vehicle's center pillar (B-pillar). With the driver door open, the label is attached near the door lock post.
__________________
slick rick is offline   Reply With Quote
Old 01-06-2013, 02:13 PM   #3
SumWhite1LE
King of All
 
SumWhite1LE's Avatar
 
Drives: 2013 Summit White 1LE 2SS/RS
Join Date: Dec 2012
Location: Oklahoma City, OK
Posts: 158
Recommended psi is 32lbs each tire.
SumWhite1LE is offline   Reply With Quote
Old 01-06-2013, 02:18 PM   #4
The Stig
knows 2 facts about ducks
 
The Stig's Avatar
 
Drives: ...and they're both wrong
Join Date: Aug 2009
Location: The HMS Invincible
Posts: 26,676
Quote:
Originally Posted by SumWhite1LE View Post
Recommended psi is 32lbs each tire.
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?
__________________
Click to view my build thread
The Stig is offline   Reply With Quote
Old 01-06-2013, 02:27 PM   #5
bannonm

 
bannonm's Avatar
 
Drives: 2011 2SS/RS M6 VR
Join Date: Aug 2011
Location: Chicagoland
Posts: 1,372
Quote:
Originally Posted by The Stig View Post
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?
Its going to depend on the tire. I switched to 285/35 20s and running those with a shorter sidewall at 36 is too much. I found the ideal pressure is 32 on the street and even lower on the track.

Sent from my DROID RAZR using Tapatalk 2
__________________
bannonm is offline   Reply With Quote
Old 01-06-2013, 02:32 PM   #6
SumWhite1LE
King of All
 
SumWhite1LE's Avatar
 
Drives: 2013 Summit White 1LE 2SS/RS
Join Date: Dec 2012
Location: Oklahoma City, OK
Posts: 158
Quote:
Originally Posted by The Stig View Post
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?
Cold Tire Pressure as per my driver side door jamb says 32lbs. But I have my owners manual open now to double check..
SumWhite1LE is offline   Reply With Quote
Old 01-06-2013, 02:37 PM   #7
Doglife1LE
 
Drives: 2004 Silverado
Join Date: Sep 2012
Location: East Bay, California
Posts: 361
My onstar app recommends 32psi all around.
__________________
http://www.camaro5.com/forums/image.php?type=sigpic&userid=68095&dateline=135482  5744
Doglife1LE is offline   Reply With Quote
Old 01-06-2013, 02:42 PM   #8
SumWhite1LE
King of All
 
SumWhite1LE's Avatar
 
Drives: 2013 Summit White 1LE 2SS/RS
Join Date: Dec 2012
Location: Oklahoma City, OK
Posts: 158
Quote:
Originally Posted by Doglife1LE View Post
My onstar app recommends 32psi all around.
Yep!! I knew I seen that somewhere... I thought it I had seen it on the DIC.
SumWhite1LE is offline   Reply With Quote
Old 01-06-2013, 02:54 PM   #9
FINALLYSATISFIED
Est.1775
 
FINALLYSATISFIED's Avatar
 
Drives: ZL1#206 (Sold) 6th Gen!?
Join Date: Sep 2009
Location: SoCal
Posts: 5,416
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.
FINALLYSATISFIED is offline   Reply With Quote
Old 01-06-2013, 03:06 PM   #10
The Stig
knows 2 facts about ducks
 
The Stig's Avatar
 
Drives: ...and they're both wrong
Join Date: Aug 2009
Location: The HMS Invincible
Posts: 26,676
Quote:
Originally Posted by SumWhite1LE View Post
Cold Tire Pressure as per my driver side door jamb says 32lbs. But I have my owners manual open now to double check..
Quote:
Originally Posted by Doglife1LE View Post
My onstar app recommends 32psi all around.
Quote:
Originally Posted by SumWhite1LE View Post
Yep!! I knew I seen that somewhere... I thought it I had seen it on the DIC.
Awesome thank you. Always good to learn something new. And now I'm off to go update the Camaro5 Wiki Page
__________________
Click to view my build thread
The Stig is offline   Reply With Quote
Old 01-07-2013, 03:54 AM   #11
jadatis
 
Drives: no camaro
Join Date: Oct 2011
Location: Holland
Posts: 6
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 03:55 AM. Reason: subscribing forgotten
jadatis is offline   Reply With Quote
Old 01-07-2013, 04:26 AM   #12
Brian 1LE SS
 
Drives: 98 Camaro SS
Join Date: Nov 2012
Location: Northern California
Posts: 407
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.
__________________
98 Camaro SS M6, a few mods
13 Ram R/T, tow vehicle
Future 2014 Summit White 1LE RS/SS
<a href=http://www.norcal-lsx.com/multimedia/data/500/562752_4054654816027_115782456_n.jpg target=_blank>http://www.norcal-lsx.com/multimedia...15782456_n.jpg</a>
Brian 1LE SS is offline   Reply With Quote
Old 01-08-2013, 10:09 AM   #13
Dropspeed
2013 Camaro SS1LECTSVZ28
 
Dropspeed's Avatar
 
Drives: 2013 AGM 1SS/1LE
Join Date: Nov 2012
Location: Suburbs of Detroit, MI
Posts: 1,604
Quote:
Originally Posted by Brian 1LE SS View Post
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.
...and the first crashed 1LE is in ....3....2......1....seconds after you enter the first turn on the street with cold tires
Dropspeed is offline   Reply With Quote
Old 01-08-2013, 10:37 AM   #14
tramtwo


 
tramtwo's Avatar
 
Drives: 2013 1LE
Join Date: Jul 2011
Location: N'Awlinz
Posts: 6,570
30 cold... I like it a bit squishy. They climb to about 34 with a few minutes of interstate driving.
__________________
tramtwo is offline   Reply With Quote
Old 01-08-2013, 11:19 AM   #15
FINALLYSATISFIED
Est.1775
 
FINALLYSATISFIED's Avatar
 
Drives: ZL1#206 (Sold) 6th Gen!?
Join Date: Sep 2009
Location: SoCal
Posts: 5,416
Quote:
Originally Posted by tramtwo View Post
30 cold... I like it a bit squishy. They climb to about 34 with a few minutes of interstate driving.
You running yours through the winter?
FINALLYSATISFIED is offline   Reply With Quote
Old 01-08-2013, 11:30 AM   #16
tramtwo


 
tramtwo's Avatar
 
Drives: 2013 1LE
Join Date: Jul 2011
Location: N'Awlinz
Posts: 6,570
Quote:
Originally Posted by MY1STCAMAR0 View Post
You running yours through the winter?
Here in New Orleans we have no winter to speak of... it is like 55 today.
__________________
tramtwo is offline   Reply With Quote
Old 01-08-2013, 11:52 AM   #17
FINALLYSATISFIED
Est.1775
 
FINALLYSATISFIED's Avatar
 
Drives: ZL1#206 (Sold) 6th Gen!?
Join Date: Sep 2009
Location: SoCal
Posts: 5,416
Quote:
Originally Posted by tramtwo View Post
Here in New Orleans we have no winter to speak of... it is like 55 today.
Ah. Must be nice!
FINALLYSATISFIED is offline   Reply With Quote
Old 01-08-2013, 05:58 PM   #18
SumWhite1LE
King of All
 
SumWhite1LE's Avatar
 
Drives: 2013 Summit White 1LE 2SS/RS
Join Date: Dec 2012
Location: Oklahoma City, OK
Posts: 158
Quote:
Originally Posted by MY1STCAMAR0 View Post
You running yours through the winter?
I didnt buy my 1LE to be a garage queen, I bought this car to drive everyday. Well except in the snow or ice..
SumWhite1LE is offline   Reply With Quote
Old 01-08-2013, 10:33 PM   #19
Mgizzle
 
Mgizzle's Avatar
 
Drives: 2013 Camaro 1LE 1SS
Join Date: Aug 2012
Location: Detroit
Posts: 601
Quote:
Originally Posted by MY1STCAMAR0 View Post
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.

51psi is the max pressure the tire can withstand without leaking. You go over that it will leak air.

Don't run 45 in the rear, 2-4 psI cold will cause enough difference to notice. You can lower front to 30, rear to 34 for example. will not impact tire pat h as much.
__________________
I work for General Motors and am not an official spokes person for General Motors. My views and opinions are my own and not those of General Motors.
Mgizzle is offline   Reply With Quote
Old 01-08-2013, 11:40 PM   #20
Brian 1LE SS
 
Drives: 98 Camaro SS
Join Date: Nov 2012
Location: Northern California
Posts: 407
Quote:
Originally Posted by Dropspeed View Post
...and the first crashed 1LE is in ....3....2......1....seconds after you enter the first turn on the street with cold tires
Not for someone who knows what they are doing. Sreet tires are not that sensitive to air pressure changes.
__________________
98 Camaro SS M6, a few mods
13 Ram R/T, tow vehicle
Future 2014 Summit White 1LE RS/SS
<a href=http://www.norcal-lsx.com/multimedia/data/500/562752_4054654816027_115782456_n.jpg target=_blank>http://www.norcal-lsx.com/multimedia...15782456_n.jpg</a>
Brian 1LE SS is offline   Reply With Quote
Old 01-09-2013, 09:55 AM   #21
Dropspeed
2013 Camaro SS1LECTSVZ28
 
Dropspeed's Avatar
 
Drives: 2013 AGM 1SS/1LE
Join Date: Nov 2012
Location: Suburbs of Detroit, MI
Posts: 1,604
Quote:
Originally Posted by Brian 1LE SS View Post
Not for someone who knows what they are doing. Sreet tires are not that sensitive to air pressure changes.
Maybe dogging cones (J/K those were my roots too.)

For the sake of the general public (the majority here) I do not recommend anyone try a 13psi higher pressure in the rear tires of a high HP rear drive car during the coldest part of the year on a summer tire only. I would venture to guess 95% that will read this have yet to turn a lap in a lot or on a track in their respective cars.

Your suggestion for "someone who knows what they are doing" applies to the other (est.) 5%.......And if they know what they are doing they are not coming on here asking for advice about what pressure to run in there car on the street.

Edit: To answer the OPs question, I would run what the OEM recommends as the pressure for normal street driving. Very general rule of thumb: Higher in the rear will help the car "rotate" (over steer) while lower PSI in the front will help the front tires turn in (traction)......Again that is general as tire design, side wall, rim width, suspension all come into play.

15 years as a road course driving instructor, chief driving instructor and road racer with track records in my classes has led me to my opinions in regards to car set-up....

-Matt

Last edited by Dropspeed; 01-09-2013 at 03:32 PM.
Dropspeed is offline   Reply With Quote
Old 01-09-2013, 06:54 PM   #22
Brian 1LE SS
 
Drives: 98 Camaro SS
Join Date: Nov 2012
Location: Northern California
Posts: 407
Quote:
Originally Posted by Dropspeed View Post
Maybe dogging cones (J/K those were my roots too.)

For the sake of the general public (the majority here) I do not recommend anyone try a 13psi higher pressure in the rear tires of a high HP rear drive car during the coldest part of the year on a summer tire only. I would venture to guess 95% that will read this have yet to turn a lap in a lot or on a track in their respective cars.

Your suggestion for "someone who knows what they are doing" applies to the other (est.) 5%.......And if they know what they are doing they are not coming on here asking for advice about what pressure to run in there car on the street.

Edit: To answer the OPs question, I would run what the OEM recommends as the pressure for normal street driving. Very general rule of thumb: Higher in the rear will help the car "rotate" (over steer) while lower PSI in the front will help the front tires turn in (traction)......Again that is general as tire design, side wall, rim width, suspension all come into play.

15 years as a road course driving instructor, chief driving instructor and road racer with track records in my classes has led me to my opinions in regards to car set-up....

-Matt
I cant help it, its the autoxer in me. Lol
__________________
98 Camaro SS M6, a few mods
13 Ram R/T, tow vehicle
Future 2014 Summit White 1LE RS/SS
<a href=http://www.norcal-lsx.com/multimedia/data/500/562752_4054654816027_115782456_n.jpg target=_blank>http://www.norcal-lsx.com/multimedia...15782456_n.jpg</a>
Brian 1LE SS is offline   Reply With Quote
Old 01-09-2013, 07:11 PM   #23
CrystalRedTintcoat

 
CrystalRedTintcoat's Avatar
 
Drives: 2013 2SS 1LE NPP GBE
Join Date: Sep 2012
Location: Bay Area, online, & in my 1LE
Posts: 2,128
Name:  ImageUploadedByTapatalk1357776694.023939.jpg
Views: 314
Size:  91.0 KB


Sent from my iPhone using Tapatalk
CrystalRedTintcoat is offline   Reply With Quote
Old 01-09-2013, 07:34 PM   #24
Mr. iNCREDIBLE


 
Mr. iNCREDIBLE's Avatar
 
Drives: 2012 2SS/RS Convertible
Join Date: Aug 2012
Location: SoCal Baby...
Posts: 2,349
I run 34lbs PSI cold. Cold being 50° outside, with the cement driveway at 41° (checked it with my laser thermometer)..

@ 34lbs PSI the tires will get to 38lbs PSI at highway speeds.. @ 38 lbs PSI I am getting what I consider to be the best performance from the tires, both in terms of grip and MPG.
__________________
"A world 100% full of Prius drivers is still 100% addicted to oil. " ~ E. Musk
Mr. iNCREDIBLE is offline   Reply With Quote
Old 01-13-2013, 09:40 AM   #25
bannonm

 
bannonm's Avatar
 
Drives: 2011 2SS/RS M6 VR
Join Date: Aug 2011
Location: Chicagoland
Posts: 1,372
Quote:
Originally Posted by Dropspeed View Post

Edit: To answer the OPs question, I would run what the OEM recommends as the pressure for normal street driving. Very general rule of thumb: Higher in the rear will help the car "rotate" (over steer) while lower PSI in the front will help the front tires turn in (traction)......Again that is general as tire design, side wall, rim width, suspension all come into play.

15 years as a road course driving instructor, chief driving instructor and road racer with track records in my classes has led me to my opinions in regards to car set-up....

-Matt
Don't take this as to use tire pressure for adjusting under/oversteer for handling changes on the track. There are proper methods for doing this. You want as much contact surface on the ground as possible. Since the 1LE is running some expense rubber, I would invest in a handheld pyrometer (can be had for $60 and more) and log your tire temps when you track. Ideally you want even temps across the outside, middle, and inside tread. Adjusting tire pressures affect this as well as your alignment settings, and other factors as Matt points out.

You need to pay attention to how your tires are working or you'll wind up wearing them unevenly and replacing more often. The occasional track guy doesn't need to sweat this, more for the hardcore guys. But those guys already know this stuff. This is more of advice for those who decide they want to use the 1LE like it was designed for and have never done this before.
__________________
bannonm is offline   Reply With Quote
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 12:47 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.