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03-09-2020, 10:19 AM
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#1
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Established Member
Join Date: Dec 2019
Location: Crystal Lake
Posts: 11
M.O.C. #25409
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Tire pressure while driving
Weeks ago I had a tire blowout. I replaced all the OEM F rated tires with G rated Carlisle. Subsequently I installed a TPMS. The cold pressure in each tire is 110 psi as recommended for the load. When driving in 65 F weather at 65 mph I saw the pressure get as high as 135 psi.
A lot of forums say things like "I believe ..." and so on. I'm interested in finding out if anyone knows for a fact, such as a data sheet from a manufacturer, at what pressure I should become concerned. FWIW the maximum temperature reported by the TPMS is 90 F.
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03-09-2020, 11:12 AM
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#2
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,774
M.O.C. #12947
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The tires are designed to handle the pressure rise when driving. Just make sure you check pressure when the tires are cold, like in the morning prior to driving.
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Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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03-09-2020, 12:29 PM
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#3
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Montana Master
Join Date: Oct 2004
Location: Salem
Posts: 7,670
M.O.C. #2283
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You do NOT haft to worry about a pressure rise. The tires are designed to handle that. Inflate then to 100 to 110 and don’t worry.
Lynwood
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03-09-2020, 01:32 PM
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#4
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Montana Fan
Join Date: Apr 2012
Location: Alexandria
Posts: 352
M.O.C. #12394
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As everyone has stated, they are rated for the increase in temp. That being said, if you have one that is increasing greatly, check out why. Possibly axle allignment, bearing heat, or maybe just under your heaviest slide causing it.
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2013 F350 SRW King Ranch
2011 3400RL
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03-09-2020, 02:36 PM
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#5
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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I would be concerned about 135. I had a couple of G 614's get that high once and one of them failed. I think it was a combination of a large change in both temperature and altitude at the same time. The tires were also 6 years old and I wouldn't let that happen again either.
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Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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03-09-2020, 05:33 PM
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#6
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Montana Fan
Join Date: May 2015
Location: Livermore
Posts: 492
M.O.C. #17391
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Just wait for a 100 degree day then check LOL
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03-10-2020, 08:02 AM
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#7
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Montana Master
Join Date: Jan 2006
Location: San Antonio
Posts: 1,308
M.O.C. #5165
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Yes, I would be concerned about 135 degrees on a 65 degree day. What was your speed? It is basic thermodynamics. Put 65 degree water in a pot and put it on the stove but do not turn on the stove. What will be the temperature in 1 hour?? It will be 65 Degrees. Now, turn the stove on to 100 degrees. What will be the water temperature in an hour?? 100 degrees MAXIMUM! It cannot boil! So how does the tire get to 135 degrees?? I would say that it is tire flexing causing the air temperature in the tire to increase. I think the 135 is a big issue. As an engineer--I did study thermodynamics! Either the temperature reading is in error-a possibility or the tires are defective.
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F-250 King Ranch Crew Cab 2012, Single Wheel, 6.7 L Diesel, Transfer Flow Internal 50 Gallon Fuel Tank, Upgraded Ford Software for 50 Gallon tank, 2006 3475Rl with Mor-ryde King Pin, 2nd AC, 2nd Battery, Pressure Pro TPMS, Wet Bolt Shackle Kit
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03-10-2020, 11:16 AM
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#8
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Established Member
Join Date: Dec 2019
Location: Crystal Lake
Posts: 11
M.O.C. #25409
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As an engineer who has studied thermodynamics and chemistry, which perhaps is not all that important methinks, since like playing telephone in grade school we lost track of the thread. The original topic was concern about tire PRESSURE measured in pounds per square inch, not tire TEMPERATURE. The peak TEMPERATURE I observed was 90 F. It was the pressure reported of 135 PSI for which I was concerned. Speed: 65 mph maximum.
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03-10-2020, 12:06 PM
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#9
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Montana Master
Join Date: Oct 2004
Location: Salem
Posts: 7,670
M.O.C. #2283
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As an engineer you should know pressure and temperature go hand in hand.
Lynwood
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03-10-2020, 03:23 PM
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#10
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Montana Fan
Join Date: May 2006
Location: San Antonio
Posts: 440
M.O.C. #5757
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While traveling through AZ in 2018 my G614's all got to 135-138 with no ill effects. It was hot outside. I did notice that if I slowed from 65 to 60 that the temperature dropped 3-5 degrees. As other posters have said, I would be more concerned about one tire being significantly higher than the others on the TPMS.
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03-10-2020, 03:29 PM
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#11
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Montana Master
Join Date: Dec 2009
Location: Sebring
Posts: 3,669
M.O.C. #9969
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Question: Did you see this same increase in all four tires?? If only on one tire, I would be very worried.
To be honest I haven't heard good things about Carlisle Trailer tires, most are using either Goodyear or Sailun. But knowing nothing about Carlisle tires, the 25 pound increase might be normal.
I have run Goodyear 17.5 H's and now Sailun 17.5 H's and on a warm day will generally see a 25 pound increase from the set pressure of 125.
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Michelle & Ann
2018 Chevy 3500HD High Country DRW 4X4 Crew Cab w/Duramax/Allison, Formally 2010 Montana 2955RL, Now Loaded 2016 SOB, Mor/ryde IS, Disc Brakes & Pin Box, Comfort Ride Hitch, Sailun 17.5 Tires.
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03-11-2020, 04:21 PM
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#12
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Montana Fan
Join Date: May 2015
Location: Livermore
Posts: 492
M.O.C. #17391
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You don't think the engineers at Goodyear tested these tires to Way more heat and air pressures that are marked on the tires. Ever wonder why they say to check tire pressures when the tire is cold. I bet these tires could stand 200PSI before they fail. If you drive in the desert on a 130 degree day you ever wonder what the PSI's in the tire would get to.I bet these tires have been subject to higher temperatures than that. After all peoples lives are at stake
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03-15-2020, 01:24 PM
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#13
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Established Member
Join Date: Mar 2020
Location: IDAHO FALLS
Posts: 12
M.O.C. #25960
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I have been thinking about getting my 5th wheel tires filled with nitrogen. Nitrogen is not effected by temperature. One place wanted $15.00 per tire and that seemed reasonable.
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03-15-2020, 01:32 PM
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#14
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Montana Fan
Join Date: Jul 2018
Location: Marion
Posts: 234
M.O.C. #22281
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Quote:
Originally Posted by Code80
I have been thinking about getting my 5th wheel tires filled with nitrogen. Nitrogen is not effected by temperature. One place wanted $15.00 per tire and that seemed reasonable.
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I think that's a huge racket. I had nitrogen in the tires on a truck I bought once, the tire pressure still went up and down.
Then you have to find nitrogen to add if you need it, not so easy to find sometimes.
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2019 Montana High Country 384BR
2018 Ram cclb 4x4 6.7 cummins/aisin dually
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03-15-2020, 01:34 PM
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#15
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Montana Master
Join Date: Aug 2015
Location: SWFL
Posts: 965
M.O.C. #17801
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Tire mfgrs state to set cold (not driven on) pressure. You don't have to worry about 135 degrees on all four tires. What you do have to be concerned with is if one tire is significantly higher than the other three, indicating a possible problem with that tire. Another possible tell-tale is if one axle's tires are hotter than the other, indicating that axle is carrying more weight for some reason.
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2016 Montana 3711FL
2005 Ford F350, 6.0 diesel, short bed
Demco Hitchiker Auto Slide hitch
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03-15-2020, 01:37 PM
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#16
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Established Member
Join Date: Mar 2020
Location: IDAHO FALLS
Posts: 12
M.O.C. #25960
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Had it in our car, no issues stayed the same summer and winter. I think it really depends on the people putting it in and if they evacuated the air correctly.
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03-15-2020, 01:40 PM
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#17
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Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,690
M.O.C. #4831
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I find that using a 78% Nitrogen mixture works very well.
__________________
Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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03-15-2020, 02:04 PM
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#18
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Montana Master
Join Date: Jan 2017
Location: home base IL, OTR anywhere
Posts: 542
M.O.C. #19382
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Quote:
Originally Posted by Carl n Susan
I find that using a 78% Nitrogen mixture works very well.
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Yes indeed it does. LOL
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2017 RAM 3500 Laramie CCLB Dually CTD Aisin, OEM auto level rear air-ride, B&W hitch
2020 3813MS Legacy Cobalt FBP, MORryde 8K IS & pinbox, PI EMS,DIY mods by in-house "craftsman", RV security system Mk1 Beagle Alerter
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03-15-2020, 03:00 PM
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#19
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Montana Master
Join Date: Apr 2006
Location: Mesa az
Posts: 3,038
M.O.C. #5651
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Quote:
Originally Posted by Carl n Susan
I find that using a 78% Nitrogen mixture works very well.
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You sneaky guy!!
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Tom and Gail
2013 Mountaineer 362
2012 Silverado 2500
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03-15-2020, 03:23 PM
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#20
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Established Member
Join Date: Feb 2018
Location: Las Vegas
Posts: 39
M.O.C. #21201
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Quote:
Originally Posted by twindman
You sneaky guy!!
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Air is the Earth's atmosphere. Air around us is a mixture of many gases and dust particles. ... Air is a mixture of about 78% of nitrogen, 21% of oxygen, 0.9% of argon, 0.04% of carbon dioxide, and very small amounts of other gases. There is an average of about 1% water vapour.
How much do you pay for that?
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Jim & Pat / '18 Montana 3811MS / '18 Ford F350SD / Pullrite ISR2300 SuperGlide
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