Recent Topics
Why I became a pilot and not a doctor...
by jetman - 01/21/20 10:52 AM
Wrong oil or not ?
by M119 - 01/21/20 10:48 AM
30 monograde
by mpack88 - 01/21/20 10:15 AM
Extended life destroys copper?
by mpack88 - 01/21/20 09:49 AM
Project Farm Lucas transmission additive video
by 1978elcamino - 01/21/20 09:43 AM
1.8t 0w40, plus a situation.
by WMNN1988 - 01/21/20 09:25 AM
Mobil 1™ ESP X2 0W-20 US Availability
by TheIceStormof06 - 01/21/20 08:46 AM
Wire harness/connector
by Redright9 - 01/21/20 07:58 AM
Will You Jump Someone Else's Car?
by Gebo - 01/21/20 07:08 AM
NAPA Edge $20 A/R
by dblshock - 01/21/20 04:54 AM
8 Utes on test.
by Silk - 01/21/20 03:03 AM
Magnetic Socket Rails
by The Critic - 01/21/20 01:19 AM
Oreilly Select complete fuel system cleaner
by keantoken - 01/21/20 12:19 AM
Local Costco Has all Oils and Viscosities $10 Off
by SteveG4 - 01/21/20 12:14 AM
EBC Rotor Pictures
by BBDartCA - 01/20/20 11:28 PM
2012 Acura TSX Wagon
by WhyMe - 01/20/20 10:47 PM
Should I Stick With My Truck? Buy "new"?
by Miller88 - 01/20/20 08:04 PM
Newest Members
reylafo, PastPresMike, RedBeard83, dfrybeck, ckinch1
70495 Registered Users
Who's Online Now
93 registered members (90crvtec, 28oz, 1978elcamino, 2011335d, 53' Stude, 2015_PSD, 7 invisible), 2,284 guests, and 21 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics300,387
Posts5,174,750
Members70,495
Most Online4,538
Jan 20th, 2020
Donate to BITOG
Print Thread
Hop To
Page 1 of 2 1 2
EXTREME cold temps ... Flat tires. #5321449 01/13/20 10:42 AM
Joined: Apr 2014
Posts: 1,348
G
geeman789 Offline OP
OP Offline
G
Joined: Apr 2014
Posts: 1,348
Temperatures have plummeted, we are seeing morning lows of -22*F ( -30*C ) and colder. Last week temps were around 30* F. ( -2*C ) Yeaah ...

I have also seen numerous flat tires around the city. Yesterday I saw 6 cars / SUV's with flat tires. WHY so many flat tires ? Is it the usual failure to check the tires for 6 months ( or ever ... ) and get caught out with a very low tire that now loses 5 or more psi just because of the temperature change ? Tire pressure will drop roughly 1 psi per 10*F temp drop. Or is there more to it. Do tires simply become so stiff in the cold that they sometimes lose their seal if they are under inflated by a large amount ?

I remember reading somewhere that people living in extreme cold climates sometimes run tubes in their tubeless tires, because below a certain temp, tubeless tires no longer seal reliably.

Thoughts ?


2011 SUBARU Impreza 5-door manual / 2016 HONDA Pilot / 2011 MAZDA 2 auto
Re: EXTREME cold temps ... Flat tires. [Re: geeman789] #5321457 01/13/20 10:52 AM
Joined: Mar 2011
Posts: 370
pkunk Offline
Offline
Joined: Mar 2011
Posts: 370
You MUST change to winter air every fall LOL


8200 ft elevation in the Sangre de Cristos
2008 Mini Cooper Clubman (toad)
2000 Mercedes ML320
1994 Dodge 2500 Cummins
1999 Ford F53 V10 Coachman Motorhome 34ft
Re: EXTREME cold temps ... Flat tires. [Re: geeman789] #5321460 01/13/20 10:55 AM
Joined: Nov 2008
Posts: 15,224
S
supton Online Content
Online Content
S
Joined: Nov 2008
Posts: 15,224
Totally flat or mostly flat? I wonder if they were low going into winter and then just dropped that much more. Maybe a few were mostly flat, got driven on and took enough damage to finish the job.

Of course, it could just be a fluke. Correlation not being causation and all.


2011 Toyota Camry, base, 2.5L/6MT, 200k, hers
2010 Toyota Tundra DC, 4.6L/6AT, 157k, ours
1999 Toyota Camry LE, 2.2L/4AT, 220k, his
Re: EXTREME cold temps ... Flat tires. [Re: geeman789] #5321461 01/13/20 10:56 AM
Joined: Jan 2015
Posts: 1,510
R
ragtoplvr Offline
Offline
R
Joined: Jan 2015
Posts: 1,510
Just my theory. Your air pressure falls with the temp. If one was already low, like with a nail in it and only about 15PSI, the liner will no longer seal to the nail and flat here we come. Also, pressure too low, and bead fails to seal. It seems people do not like to stand out in the cold and air up tires. I do it, and I do not like it and cold here is 40F. at -20 I would really hate it.

Rod

Re: EXTREME cold temps ... Flat tires. [Re: geeman789] #5321462 01/13/20 10:56 AM
Joined: Dec 2017
Posts: 5,602
S
Snagglefoot Offline
Offline
S
Joined: Dec 2017
Posts: 5,602
Here is where the 1 psi per 10 degrees F came from. I'm thinking the bead is not a pliable as when it is warmer. Also, some of those tires might not have been topped up in a long time. A lot of people drive at 20 psi instead of 30 and never notice it.

Meanwhile the TPMS indicators are lighting up like Christmas trees in Alberta and Saskatchewan.

https://en.wikipedia.org/wiki/Cold_inflation_pressure.






Last edited by Snagglefoot; 01/13/20 11:01 AM.

If you want the job done right......do it yourself.
Re: EXTREME cold temps ... Flat tires. [Re: geeman789] #5321472 01/13/20 11:09 AM
Joined: Apr 2008
Posts: 13,812
M
Miller88 Offline
Offline
M
Joined: Apr 2008
Posts: 13,812
Aluminum wheels and bead leaks. An ex of mine had a Honda with aluminum wheels that just would not hold air below 20F. I cleaned up the beads, sealed ... no luck . Had multiple shops clean up the beads and seal, no luck. New valve stems with sealed and cleaned the surface, still leaked. Even did new tires.

My suggestion was steel wheels but that was not well received.


18 Forester 2.5I 6M
00 Jeep XJ
01 F-350 4x4 5M
Re: EXTREME cold temps ... Flat tires. [Re: geeman789] #5321476 01/13/20 11:14 AM
Joined: Aug 2016
Posts: 533
C
carviewsonic Offline
Offline
C
Joined: Aug 2016
Posts: 533
I think it's a combination of low pressure due to very low temperature, and (as Snagglefoot said) a non-pliable tire bead.

I've noticed the same thing every winter, more flat tires in really cold weather.


'18 Impala
'05 Park Avenue
'03 Park Avenue
'07 Honda Accord
'09 VStar 1300
Re: EXTREME cold temps ... Flat tires. [Re: geeman789] #5321564 01/13/20 12:55 PM
Joined: Dec 2017
Posts: 3,200
J
JLTD Offline
Offline
J
Joined: Dec 2017
Posts: 3,200
If you run your tires at low air pressure any time of year, you will see more flats… People just don't keep up with their tire pressure when the temperature drops.


"Let’s not pretend like 0w20 is anything but a CAFE required crutch to eek another 1/2MPG" - BLND1

Hers: 2018 Ford Flex AWD EB, dealer fill

His: 2015 4Runner 60k, SS 5w20/Amsoil

Re: EXTREME cold temps ... Flat tires. [Re: geeman789] #5321632 01/13/20 01:58 PM
Joined: Apr 2016
Posts: 586
1
1978elcamino Online Content
Online Content
1
Joined: Apr 2016
Posts: 586
Those on the side of the road were not scammed in to nitrogen fill


2018 F150 5.0
2016 Ford Fusion 2.5
Re: EXTREME cold temps ... Flat tires. [Re: geeman789] #5321690 01/13/20 02:58 PM
Joined: Mar 2018
Posts: 226
O
Oily_Thing Offline
Offline
O
Joined: Mar 2018
Posts: 226
Low tire pressure causes excess flexing and the tire overheats and fails.

Ever notice all the boats and campers that have flat tires on the first warm day of spring? Folks don't check 'em and they are low and overheat.


2020 Nissan Rogue SV AWD
2015 Dodge Durango Limited 3.6
Re: EXTREME cold temps ... Flat tires. [Re: geeman789] #5321731 01/13/20 03:38 PM
Joined: Jun 2003
Posts: 35,127
E
eljefino Offline
Offline
E
Joined: Jun 2003
Posts: 35,127
I checked and overfilled my wife's tires two winters ago right before we had that -20F cold streak. I did not want any problems-- pure survival mode.

One went flat anyway the next morning. I think it was a piece of ice, from condensation from the summer air, jamming the valve core open slightly. It was about 10 above when I did that. I try to use dry air from dry days to inflate my tires, but still got burnt.

This is where TPMS shines-- one doesn't have to invasively check pressures. Of course they're four more batteries to take a dump in the cold.

Re: EXTREME cold temps ... Flat tires. [Re: geeman789] #5321758 01/13/20 04:15 PM
Joined: Jun 2002
Posts: 2,566
Bud Offline
Offline
Joined: Jun 2002
Posts: 2,566
Let me get back to you after I call Brady. He knows a bit about air pressure and cold temps. grin


2016 Honda Pilot EX-L with NAVI.....Mobil 1 0w20 AFE and Honda OEM Filter
Re: EXTREME cold temps ... Flat tires. [Re: Oily_Thing] #5321789 01/13/20 04:50 PM
Joined: Apr 2014
Posts: 1,348
G
geeman789 Offline OP
OP Offline
G
Joined: Apr 2014
Posts: 1,348
Originally Posted by Oily_Thing


Low tire pressure causes excess flexing and the tire overheats and fails.



Sure. Except that it was -22*F this morning. Heat is not the issue at these temps.


2011 SUBARU Impreza 5-door manual / 2016 HONDA Pilot / 2011 MAZDA 2 auto
Re: EXTREME cold temps ... Flat tires. [Re: geeman789] #5322239 01/14/20 07:43 AM
Joined: Feb 2003
Posts: 3,692
C
CapriRacer Offline
Offline
C
Joined: Feb 2003
Posts: 3,692
Just an FYI:

The Coefficient of Linear Expansion for steel is twice that of rubber, and for aluminum, it's 3 1/2 times.

That means the wheels will shrink more, the colder it gets. It should be no surprise that tires leak more when the weather gets extremely cold.

But having more pressure in the tires helps, as that pressure helps seal the beads to the SIDES of the wheel flange.


CapriRacer

Visit my web site: www.BarrysTireTech.com
Re: EXTREME cold temps ... Flat tires. [Re: geeman789] #5324038 01/16/20 03:14 AM
Joined: Mar 2008
Posts: 2,088
W
Ws6 Online Content
Online Content
W
Joined: Mar 2008
Posts: 2,088
Got down to -15 last year. I had zero issues. TPMS didnt even come on. I doubt that extra 10* would drop me from not even provoking the TPMS to "flat".


2019 CX5 Grand Touring Reserve
Page 1 of 2 1 2
Previous Thread
Index
Next Thread

BOB IS THE OIL GUY® Powered by UBB.threads™