Forum Jump Gallery Social Groups vBLive Garage Register Now Videos Link To Us Store Site Map TSBs
Cobalt SS Network Forums
The Cobalt SS Network is the leading resource for all Chevy Cobalts and related Delta
platform cars. Registered users do not see the above ads. Please Register - It's Free!
Vendor Forums



Go Back   Cobalt SS Network > General > General Cobalt
Sign in using an external account
Register Forgot Password?

Home Regional All Albums   FAQ Members List
General Cobalt General Cobalt, Pursuit, and Ion talk. Post specific discussions in the forums below

How much tire pressure do you use?

This is a discussion on How much tire pressure do you use? within the General Cobalt forums, part of the General category; My tires say that the absolute max for the tires is 44 PSI, so I was wondering what a good ...

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread Display Modes
Old 07-17-2007, 09:53 PM   #1
Member

 
Join Date: 11-24-05
Location: Florida
Member #: 4271
Posts: 211
Images: 7
iTrader: (0)
Send a message via AIM to Aleckor
Check out my gallery 

How much tire pressure do you use?

My tires say that the absolute max for the tires is 44 PSI, so I was wondering what a good amount of air would be for that. The dealer told me I need at least 28 pounds of pressure in there, but I think 28 is kind of low if 44 is the absolute max. In the end, I ended up going with around 39-41 PSI for each tire.

What PSI do you all use and on what max do your tires say? I'm trying to determine if I'm overinflating my tires or not. Thanks.
-Aleckor
__________________
- 2008 Chevy Cobalt Sport
- Black Coupe

Aleckor is offline   Reply With Quote
Old 07-17-2007, 09:55 PM   #2
Senior Member

 
Join Date: 10-19-06
Location: Currituck, NC
Member #: 11293
Posts: 907
Images: 2
iTrader: (0)
Send a message via AIM to 2fastforyouraSS
Check out my gallery 

Quote:
Originally Posted by Aleckor View Post
My tires say that the absolute max for the tires is 44 PSI, so I was wondering what a good amount of air would be for that. The dealer told me I need at least 28 pounds of pressure in there, but I think 28 is kind of low if 44 is the absolute max. In the end, I ended up going with around 39-41 PSI for each tire.

What PSI do you all use and on what max do your tires say? I'm trying to determine if I'm overinflating my tires or not. Thanks.
-Aleckor
32 is perfect
__________________
2fastforyouraSS is offline   Reply With Quote
Old 07-17-2007, 09:55 PM   #3
Senior Member

 
g5mike's Avatar
 
Join Date: 03-17-06
Location: Moncton Newbrunswick Can.
Member #: 5999
Posts: 17,271
Images: 56
iTrader: (0)
Check out my gallery 

35psi is just perfect
__________________
Waiting For Rods' Car......
g5mike is offline   Reply With Quote
Old 07-17-2007, 09:56 PM   #4
Senior Member

 
Join Date: 03-16-07
Location: Phoenix, Az
Member #: 14881
Posts: 1,117
iTrader: (0)
Check out my gallery 

32 psi
__________________

>GMPP Stage II>GMPP Catback>K&N Typhoon>60#Inj>Intense 2.8>Hurst S T>ZZP Header & D P>Prothane Trans Bushings>TTR Solid Mt>Stoptech Slotted Rotors>Hawk HPS Pads>ZZP H.E.>Euthanasia P&P>***PsykoTuned***
SSKevinSC is offline   Reply With Quote
Old 07-17-2007, 09:56 PM   #5
Senior Member
Points: 6,332, Level: 51
Points: 6,332, Level: 51 Points: 6,332, Level: 51 Points: 6,332, Level: 51
Level up: 91%, 18 Points needed
Level up: 91% Level up: 91% Level up: 91%
Activity: 0%
Activity: 0% Activity: 0% Activity: 0%

 
Join Date: 03-10-06
Location: Houston Texas
Member #: 5865
Posts: 878
Images: 7
iTrader: (0)
Send a message via MSN to cheesetits
Check out my gallery 

I use 32 for the street, 25 for the track.
__________________
The Answer to Immortality:
Up Down Up Down Right Left Right Left A B A BB A X Y Up Down


cheesetits is offline   Reply With Quote
Old 07-17-2007, 09:57 PM   #6
Senior Member

Points: 11,702, Level: 71
Points: 11,702, Level: 71 Points: 11,702, Level: 71 Points: 11,702, Level: 71
Level up: 13%, 348 Points needed
Level up: 13% Level up: 13% Level up: 13%
Activity: 0%
Activity: 0% Activity: 0% Activity: 0%

 
Join Date: 07-09-06
Location: PA
Member #: 8643
Posts: 7,451
Images: 59
iTrader: (0)
Send a message via AIM to R&C_rallySS
Check out my gallery 

I use 33 psi for every day, and 20s for racing up front.
__________________
Note: This post may contain misspellings, grammatical errors, disorganized sentence structure, or may entirely lack a coherent theme. These elements are natural to the process of writing, and will only add to the overall beauty of my post.
1991 GMC Syclone #2213 of 2998 0 to 60 in 1,2,3
R&C_rallySS is offline   Reply With Quote
Old 07-17-2007, 10:08 PM   #7
Member
 
Join Date: 07-11-06
Location: Northeast Ohio
Member #: 8693
Posts: 270
iTrader: (0)
Check out my gallery 

32 in the front, 34 in the back. runnin on 215/40/17's
My06Kobalt is offline   Reply With Quote
Old 07-17-2007, 10:11 PM   #8
Senior Member

Points: 13,376, Level: 75
Points: 13,376, Level: 75 Points: 13,376, Level: 75 Points: 13,376, Level: 75
Level up: 32%, 274 Points needed
Level up: 32% Level up: 32% Level up: 32%
Activity: 0%
Activity: 0% Activity: 0% Activity: 0%

Award-Showcase
 
Join Date: 05-10-07
Location: West Babylon, NY
Member #: 16407
Posts: 5,889
Images: 53
iTrader: (0)
Check out my gallery 

dude.... 32... thats just about what every manual and every shop teacher will ever teach you. just the max is 44 doesn't mean you want to be anywhere near that
__________________


2006 Cobalt LT - Sunburst Orange - Sunroof - Pioneer Premium Sound
2.2 Reflash Thread
OrngBalt is offline   Reply With Quote
Old 07-17-2007, 10:31 PM   #9
Member

 
Join Date: 11-24-05
Location: Florida
Member #: 4271
Posts: 211
Images: 7
iTrader: (0)
Send a message via AIM to Aleckor
Check out my gallery 

So 40 is overinflated then? or is it still alright at 40? That's what I'm trying to determine. Some of you are saying 32, some of you say 35, which is it?
-Aleckor
__________________
- 2008 Chevy Cobalt Sport
- Black Coupe

Aleckor is offline   Reply With Quote
Old 07-17-2007, 10:34 PM   #10
Senior Member

 
Join Date: 02-04-07
Location: Mildenhall England
Member #: 13937
Posts: 794
Images: 25
iTrader: (0)
Send a message via AIM to justin04 Send a message via MSN to justin04 Send a message via Yahoo to justin04
Check out my gallery 

if you have 44 psi of air in the tire the center of the tire will wear quicker? is that true?
__________________

Mods: Black Calipers, Ingalls Torque Dampner, Borla Catback And 5% Tint, Projector Head Lights.
justin04 is offline   Reply With Quote
Old 07-17-2007, 10:41 PM   #11
Member

 
Join Date: 11-24-05
Location: Florida
Member #: 4271
Posts: 211
Images: 7
iTrader: (0)
Send a message via AIM to Aleckor
Check out my gallery 

Quote:
Originally Posted by justin04 View Post
if you have 44 psi of air in the tire the center of the tire will wear quicker? is that true?
If you have an overinflated tire it will - I'm not sure 44 PSI will constitute as overinflated unless your max suggested PSI for your tire is below 44. But then again, being at exactly 44 PSI when your max is 44 is probably not a good idea either. So I would say that you are correct to assume the center of your tire will wear quicker as a result of overinflation if your PSI is 44 and your tire's max is 44. (It just doesn't make logical sense to be at the very max - You wouldn't blow up a balloon so much that even a tiny tiny bit more air would pop it would you?)

As for whether or not 44 PSI is overinflated is something I'm wondering myself. I have 40 PSI in my 44 PSI tires, and I'm curious if my tires are overinflated or not. Most of the guys here are saying that 32-35 PSI is optimum for 44 PSI tires (or any tires I guess?)
-Aleckor
__________________
- 2008 Chevy Cobalt Sport
- Black Coupe

Aleckor is offline   Reply With Quote
Old 07-18-2007, 02:26 AM   #12
New Member
 
Join Date: 07-02-07
Location: IL
Member #: 17884
Posts: 76
iTrader: (0)
Check out my gallery 

there's a sticker on the inside of the door frame that says "cold tire pressure: 35psi"

32-35 would be a good range to aim for
__________________
2.4L Victory Red
Mods:Red Door Control Panel Inserts--Painted Calipers (Red)--GMPP Air Intake--
Upcoming Mods: Exhaust, lowering springs, and front strut
SlifoxS is offline   Reply With Quote
Old 07-18-2007, 04:43 AM   #13
Senior Member

Points: 8,270, Level: 61
Points: 8,270, Level: 61 Points: 8,270, Level: 61 Points: 8,270, Level: 61
Level up: 40%, 180 Points needed
Level up: 40% Level up: 40% Level up: 40%
Activity: 0.1%
Activity: 0.1% Activity: 0.1% Activity: 0.1%

 
Join Date: 07-01-05
Location: Northeastern New York
Member #: 2408
Posts: 1,847
Images: 44
iTrader: (0)
Send a message via Yahoo to Adirondack_Cobalt
Check out my gallery 

is there really hard and fast (no pun intended) rule about expansion with temperature. What I mean, cold inflation is 32psi, but when that tire is driven, does it really vary what the pressure increases to?

Scott
Adirondack_Cobalt is offline   Reply With Quote
Old 07-18-2007, 07:51 AM   #14
Senior Member

 
g5mike's Avatar
 
Join Date: 03-17-06
Location: Moncton Newbrunswick Can.
Member #: 5999
Posts: 17,271
Images: 56
iTrader: (0)
Check out my gallery 

Quote:
Originally Posted by justin04 View Post
if you have 44 psi of air in the tire the center of the tire will wear quicker? is that true?
don,t forget in hotter tempatures your tire pressure expands more,I usually drop it 2psi in the hotter months and yes over inflation will cause the center of the tire to wear more quickly
__________________
Waiting For Rods' Car......
g5mike is offline   Reply With Quote
Old 07-18-2007, 08:12 AM   #15
Senior Member

Points: 13,376, Level: 75
Points: 13,376, Level: 75 Points: 13,376, Level: 75 Points: 13,376, Level: 75
Level up: 32%, 274 Points needed
Level up: 32% Level up: 32% Level up: 32%
Activity: 0%
Activity: 0% Activity: 0% Activity: 0%

Award-Showcase
 
Join Date: 05-10-07
Location: West Babylon, NY
Member #: 16407
Posts: 5,889
Images: 53
iTrader: (0)
Check out my gallery 

Your car rolls off the lot at 32-33, every time you get it checked, they reset it to 32-33, when you bring it to any mechanics shop for anything... they reset it to 32-33. If you get new tires they.....



well you get the idea. 40 is WAY overinflated
__________________


2006 Cobalt LT - Sunburst Orange - Sunroof - Pioneer Premium Sound
2.2 Reflash Thread
OrngBalt is offline   Reply With Quote
Old 07-18-2007, 08:19 AM   #16
Senior Member

 
g5mike's Avatar
 
Join Date: 03-17-06
Location: Moncton Newbrunswick Can.
Member #: 5999
Posts: 17,271
Images: 56
iTrader: (0)
Check out my gallery 

Quote:
Originally Posted by OrngBalt View Post
Your car rolls off the lot at 32-33, every time you get it checked, they reset it to 32-33, when you bring it to any mechanics shop for anything... they reset it to 32-33. If you get new tires they.....



well you get the idea. 40 is WAY overinflated
wonder why it says 35 on the inside of the door then?
__________________
Waiting For Rods' Car......
g5mike is offline   Reply With Quote
Old 07-18-2007, 08:29 AM   #17
Senior Member

Points: 8,125, Level: 60
Points: 8,125, Level: 60 Points: 8,125, Level: 60 Points: 8,125, Level: 60
Level up: 88%, 25 Points needed
Level up: 88% Level up: 88% Level up: 88%
Activity: 0.7%
Activity: 0.7% Activity: 0.7% Activity: 0.7%

 
InfinityzeN's Avatar
 
Join Date: 04-02-06
Location: Harker Heights, TX
Member #: 6374
Posts: 3,511
Images: 10
iTrader: (0)
Send a message via AIM to InfinityzeN Send a message via MSN to InfinityzeN Send a message via Yahoo to InfinityzeN
InfinityzeN
Check out my gallery 

I suggest you study up on this site http://www.carbibles.com/

Specifically this section http://www.carbibles.com/tyre_bible.html

With a 44psi max, I would recommend ~39psi. Take a MPG rating and also see how it handles there. Your MPG should go up, handling increase, slight rise in ride stiffness, and any weird tire wear should go away.

32psi is from 1990's tech tires. Car companies have not changed their recommendations since then, although tires have advanced significantly. Try google, should help you out.
__________________

Infiniti G37S - Premium - Navigation - Technology - Tuned
InfinityzeN is offline   Reply With Quote
Old 07-18-2007, 08:39 AM   #18
Junior Member
 
Join Date: 04-19-07
Location: Kemptville, Ontario
Member #: 15784
Posts: 457
iTrader: (0)
Check out my gallery 

Quote:
Originally Posted by OrngBalt View Post
Your car rolls off the lot at 32-33, every time you get it checked, they reset it to 32-33, when you bring it to any mechanics shop for anything... they reset it to 32-33. If you get new tires they.....



well you get the idea. 40 is WAY overinflated
X 1 Million.

32-35lbs.. MAX
__________________

2007 Cobalt SS Supercharged in Ultra Silver Metallic.
FuriouS is offline   Reply With Quote
Old 07-18-2007, 10:45 AM   #19
Senior Member

 
an0malous's Avatar
 
Join Date: 06-28-06
Location: Canada
Member #: 8348
Posts: 12,581
Images: 22
iTrader: (0)
Check out my gallery 

Quote:
Originally Posted by g5mike View Post
wonder why it says 35 on the inside of the door then?
mine says 32, both in manual, and inside of door.
could possibly be your particular tire/rim setup in the pontiac?


Either way, that "max pressure" rating, is telling you the following:

Hey buddy, inflate me to this psi, and give the tire a good kick, and it may just blow your leg off.


just stick to around 30-35.
__________________
Current C02 Concentrations sit at approximately 380ppm.
During the Ordovician Period 460 million years ago CO2 concentrations were 4400 ppm while temperatures then were about the same as they are today
an0malous is offline   Reply With Quote
Old 07-18-2007, 12:02 PM   #20
Senior Member

Points: 8,125, Level: 60
Points: 8,125, Level: 60 Points: 8,125, Level: 60 Points: 8,125, Level: 60
Level up: 88%, 25 Points needed
Level up: 88% Level up: 88% Level up: 88%
Activity: 0.7%
Activity: 0.7% Activity: 0.7% Activity: 0.7%

 
InfinityzeN's Avatar
 
Join Date: 04-02-06
Location: Harker Heights, TX
Member #: 6374
Posts: 3,511
Images: 10
iTrader: (0)
Send a message via AIM to InfinityzeN Send a message via MSN to InfinityzeN Send a message via Yahoo to InfinityzeN
InfinityzeN
Check out my gallery 

Actually the max psi is cold. Tires are designed to handle 6 to 10psi over that, which is what will happen if you drive for a long time or drive really really hard.
__________________

Infiniti G37S - Premium - Navigation - Technology - Tuned
InfinityzeN is offline   Reply With Quote
Old 07-18-2007, 05:01 PM   #21
Member

 
Join Date: 11-24-05
Location: Florida
Member #: 4271
Posts: 211
Images: 7
iTrader: (0)
Send a message via AIM to Aleckor
Check out my gallery 

How long does it usually take for tires to lose their pressure? In other words, am I safe to just leave it around 40 PSI with a 44 PSI max? because inevitably eventually it'll drop back down to the 35-39 range which seems to be okay with most of you, though a lot of you think 32 is better.

Am I correct to assume it'll be okay or should I be letting the air out of my tires right now?
-Aleckor
__________________
- 2008 Chevy Cobalt Sport
- Black Coupe

Aleckor is offline   Reply With Quote
Old 07-18-2007, 05:05 PM   #22
Senior Member

 
an0malous's Avatar
 
Join Date: 06-28-06
Location: Canada
Member #: 8348
Posts: 12,581
Images: 22
iTrader: (0)
Check out my gallery 

I would man.
40 is pretty extreme.
__________________
Current C02 Concentrations sit at approximately 380ppm.
During the Ordovician Period 460 million years ago CO2 concentrations were 4400 ppm while temperatures then were about the same as they are today
an0malous is offline   Reply With Quote
Old 07-18-2007, 05:29 PM   #23
Senior Member

Points: 8,119, Level: 60
Points: 8,119, Level: 60 Points: 8,119, Level: 60 Points: 8,119, Level: 60
Level up: 85%, 31 Points needed
Level up: 85% Level up: 85% Level up: 85%
Activity: 0%
Activity: 0% Activity: 0% Activity: 0%

 
Join Date: 11-23-06
Location: Texas boy stuck in an Iowa Cornfield
Member #: 12170
Posts: 2,829
Images: 19
iTrader: (0)
lightbalt lightbalt
Check out my gallery 

Too much air, the middle area will wear faster
Too little air, the outside edges wear faster.

Side of the door is OEM perfered setting.
__________________
light'bolt is offline   Reply With Quote
Old 07-18-2007, 07:06 PM   #24
Member

 
Join Date: 11-24-05
Location: Florida
Member #: 4271
Posts: 211
Images: 7
iTrader: (0)
Send a message via AIM to Aleckor
Check out my gallery 

http://www.sportcompactcarweb.com/te...ressure_guide/

I found a pretty good formula to use but I don't know how much the Cobalt weighs. How much does a Cobalt LS 2.2L weigh? Is it in my manual somewhere?

Anyway the formula is:

Vehicle Weight in lb/100) + 2 psi at heavier end + 2 psi all around if suspension and alignment are stock.

Example: Stock 911, 3,000 lb.
(3000/100) = 30 psi
Add 2 psi all around = 32 psi
Add 2 psi to heavy end = 34 psi at rear
With modified suspension, the result is 30 psi front, 32 psi rear.
__________________
- 2008 Chevy Cobalt Sport
- Black Coupe

Aleckor is offline   Reply With Quote
Old 07-18-2007, 07:51 PM   #25
Rent me! per hour

Points: 56,425, Level: 100
Points: 56,425, Level: 100 Points: 56,425, Level: 100 Points: 56,425, Level: 100
Level up: 0%, 0 Points needed
Level up: 0% Level up: 0% Level up: 0%
Activity: 1.9%
Activity: 1.9% Activity: 1.9% Activity: 1.9%

Award-Showcase
 
Area47's Avatar
 
Join Date: 03-22-07
Location: Faster than Bob White.
Member #: 15036
Posts: 23,990
Images: 22
iTrader: (0)
Check out my gallery 

32 front
34 rear.
__________________
Area47 is offline   Reply With Quote
Old 07-18-2007, 07:51 PM
CobaltSS
Chevy Cobalt




Paid Advertisement
 
 
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
How To: Build Your Own ECOTEC Turbo Kit NJHK Forced Induction 38 03-05-2012 10:18 AM
The Ultimate ECOTEC Related Turbo FAQ! NJHK Forced Induction 59 08-06-2009 11:18 PM
Fuel System 101 FAQ NJHK Tuning 16 11-04-2007 07:30 PM
FYI: Common Tire Confusion and Answers From a Tire Specialist stealththx Wheels and Tires 11 07-16-2006 03:23 AM
How To Read a Turbo Pressure Map Brian MP5T Forced Induction 2 11-14-2005 09:46 PM


All times are GMT -4. The time now is 02:36 AM.


vBulletin copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Admincp backup