Tire Pressure and Winter? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Nicholas · 01-08-2010, 02:05 PM

So last night I checked the tired pressure in my car and it was around 38 in the front and the back... well the Temp. dropped to about 19 degrees last night ... I check the tire pressure this morning... 35 front and around 28 and 29 in the back... so I'm wondering .. does the Cold Temperatures have anything to do with the tire pressure dropping like that? Comments please.. this has been bugging me all day... Thanks for reading this.

Ammo7 · 01-08-2010, 02:07 PM

YES

thecamaroguy · 01-08-2010, 02:14 PM

"For every 10 degree Fahrenheit change in outside temperature, your tire's inflation pressure will change by about 1 psi (up with higher and down with lower temperatures)"

http://www.tirerack.com/winter/tech/...jsp?techid=121

tjd24 · 01-08-2010, 02:21 PM

Yes, changes with temps. On my 20" Blizzaks:

In my garage the temp is about 35-40, tire pressure at start is usually around 34 psi, after commute to work (5o minutes, 32 miles) tires warm to 36-37 psi.

For the commute home & Camaro sitting in open parking lot at 20 degrees its around 32 psi and warms to 36-37 for the ride home.

Nicholas · 01-08-2010, 02:46 PM

Ok thank all of you very much for anwering my question!

ravensjeff · 01-08-2010, 02:49 PM

Your tire pressure dropped 9 PSI??? What was the temperature at the 38 PSI read- 100 degrees? That's a big drop.

Nicholas · 01-08-2010, 02:55 PM

No it was like 64 degrees then went to 19 degrees but how the heck did it drop 9 PSI? thats whats been bugging me..

camarossrs2150 · 01-08-2010, 02:56 PM

on star also sends you tire pressure on there monthly letter

ravensjeff · 01-08-2010, 03:05 PM

Quote:

Originally Posted by Nicholas

No it was like 64 degrees then went to 19 degrees but how the heck did it drop 9 PSI? thats whats been bugging me..

That would bug me too. I keep my car in a heated garage at around 65 degrees. PSI = 36. On the way to work, might get 37/38 psi. With car sitting for 8 hours in 20-25 deg weather, it'll read about 34 psi.

You might want to check the pressure with a good gauge to verify the car readout.

SlingShot · 01-08-2010, 03:08 PM

Quote:

Originally Posted by ravensjeff

Your tire pressure dropped 9 PSI??? What was the temperature at the 38 PSI read- 100 degrees? That's a big drop.

I was thinking the same..... Sounds more like a sensor misreading ....

Use Nitrogen if your not now, your pressures will be more stable ...

Nicholas · 01-08-2010, 04:22 PM

Quote:

Originally Posted by ravensjeff

That would bug me too. I keep my car in a heated garage at around 65 degrees. PSI = 36. On the way to work, might get 37/38 psi. With car sitting for 8 hours in 20-25 deg weather, it'll read about 34 psi.

You might want to check the pressure with a good gauge to verify the car readout.

Thanks I'll check it when I get home... hopefully everything is ok.:bangdesk:

Camaro_Custom_Painted · 01-08-2010, 06:49 PM

Somtimes very cold temps can cause a tire to leak air in addition to the cold induced reduction in pressure. Happens all the time here in MN.

Bell040 · 01-08-2010, 06:51 PM

PV = nRT

Ideal gas law

KJS · 01-08-2010, 11:00 PM

...cold causes it to get smaller - the tire pressure of course.

01-08-2010, 02:05 PM	#1
Nicholas Account Suspended Drives: 2010 Camaro 1SS/RS Join Date: Jan 2010 Location: Beaumont, Texas Posts: 119	Tire Pressure and Winter? So last night I checked the tired pressure in my car and it was around 38 in the front and the back... well the Temp. dropped to about 19 degrees last night ... I check the tire pressure this morning... 35 front and around 28 and 29 in the back... so I'm wondering .. does the Cold Temperatures have anything to do with the tire pressure dropping like that? Comments please.. this has been bugging me all day... Thanks for reading this.

01-08-2010, 02:14 PM	#3
thecamaroguy Drives: 2020 ZLE 67 SS350 Join Date: Jul 2008 Location: Kentucky Posts: 540	"For every 10 degree Fahrenheit change in outside temperature, your tire's inflation pressure will change by about 1 psi (up with higher and down with lower temperatures)" http://www.tirerack.com/winter/tech/...jsp?techid=121 __________________ Thanks, thecamaroguy 2010 Camaro 2SS - CGM 1967 Camaro SS350 - Baldwin Motion Tribute 2020 Camaro ZL1 1LE - White Proud to say I have always owned a Camaro! A Camaro has been my Daily driver since I started driving!

01-08-2010, 02:21 PM	#4
tjd24 Thank you Oshawa/St.Cats! Drives: was 2010 2LT RS 2G1FC1EV4A9103434 Join Date: May 2009 Location: NW NJ Posts: 3,481 View My Garage	Yes, changes with temps. On my 20" Blizzaks: In my garage the temp is about 35-40, tire pressure at start is usually around 34 psi, after commute to work (5o minutes, 32 miles) tires warm to 36-37 psi. For the commute home & Camaro sitting in open parking lot at 20 degrees its around 32 psi and warms to 36-37 for the ride home. __________________ #3434 Born 4-15-2009, Delivered 5-22-2009 BBOMG 2/3/4 - Traded-in 8/31/2019:

01-08-2010, 02:49 PM	#6
ravensjeff 100% Chevy & Harley Man Drives: 2010 2SS: Blown LSX 376-B15 Join Date: Feb 2009 Location: Eldersburg,MD Posts: 2,211 View My Garage	Your tire pressure dropped 9 PSI??? What was the temperature at the 38 PSI read- 100 degrees? That's a big drop. __________________ LSX 376-B15, TVS2300 SC, Harland Sharp Rockers w/ Trunion Bearings, ATI Balancer/keyed, AR LT Headers/Borla Catback Exhaust, DSS 1400 HP Axles, DSS aluminum driveshaft, 3.70, Hotchkis Springs/Sway bars, Forgeline SO3P Aluminum Wheels (20x9.5 F/20x11 R)w/ Hidden Titanium Hardware, Nitto NT05 Tires (27540ZR20 F/31535ZR20 R), Billet LPE brake/gas pedals, Escort 9500ci Radar Detector Laser Jammer, Roto Fab CAI with Ice Silver box, Carbon fiber tube/MAF Housing Assy, LPE Aluminum coil covers, SS9 Sleeper Fiber Glass Hood (ACS), Carbotech 1521 ceramic brake pads, Elite catch can.

01-08-2010, 02:56 PM	#8
camarossrs2150 Drives: abm2ssrs Join Date: Apr 2009 Location: still out of my mind Posts: 2,095	on star also sends you tire pressure on there monthly letter __________________ [SIGPIC]

01-08-2010, 02:07 PM	#2
Ammo7 I GOT HER Drives: 2010 Camaro 2ss/rs RJT Join Date: Jul 2009 Location: Duluth Ga 30097 Posts: 399	YES

01-08-2010, 02:46 PM	#5
Nicholas Account Suspended Drives: 2010 Camaro 1SS/RS Join Date: Jan 2010 Location: Beaumont, Texas Posts: 119	Ok thank all of you very much for anwering my question!

01-08-2010, 02:55 PM	#7
Nicholas Account Suspended Drives: 2010 Camaro 1SS/RS Join Date: Jan 2010 Location: Beaumont, Texas Posts: 119	No it was like 64 degrees then went to 19 degrees but how the heck did it drop 9 PSI? thats whats been bugging me..

01-08-2010, 06:49 PM	#12
Camaro_Custom_Painted Choke on that causality! Drives: 2010 2SS/RS Join Date: Sep 2009 Location: Minnesota Posts: 645	Somtimes very cold temps can cause a tire to leak air in addition to the cold induced reduction in pressure. Happens all the time here in MN.

01-08-2010, 06:51 PM	#13
Bell040 Drives: 2SS/RS - Black - GFX Join Date: Nov 2008 Location: B'ham, Alabama Posts: 2,458 View My Garage	PV = nRT Ideal gas law __________________ Ordered: 10-13-08 Built: 3-30-09 (#1691) Recieved: 6-12-09 Blacked out, Cammed (Lunati Voodoo 233/245, .578/.598 @114°, +4°), ARH LTs, VR OTR CAI, Cutouts, and lots of other fun mods.

01-08-2010, 11:00 PM	#14
KJS Drives: '10 RJT,'95&'14 Vette Join Date: Feb 2009 Location: Cut Throat, NY Posts: 1,722 View My Garage	Shrinkage factor... ...cold causes it to get smaller - the tire pressure of course. __________________ *"As ye sow, so shall ye reap" - Me* Mine at sunset

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