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Thread: Tire pressure at 144psi
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06-17-2021, 11:55 AM #1
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Tire pressure at 144psi
2020 Ford F-350 Tremor - upgraded with Air Lift 5K bags & S&B 60 gallon tank
2021 GD Solitude 3550BH
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06-17-2021, 12:22 PM #2
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Seems like a rather large increase for such a low temperature. I recently installed a factory TMPS and cold pressure is 65 PSI, while traveling they increased to 71 PSI and the temp was up to 135 degrees F. Sorry I can't give any more guidance.
2020 GMC Sierra 2500 AT4 6.6L Gasser
2020 Imagine 2400BH
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06-17-2021, 01:33 PM #3
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I have tires with max cold pressure of 80 PSI. I see them go up to about 89-91 psi with internal tire temps in the low 100's. This with ambient at about 90 deg. Of course this will vary as ambient temperature varies.
Here is a web link to an article by Roger Marble.
https://www.rvtravel.com/rver-concer...sure-increase/
His Tire Safety site states that ". . . tire pressure will change about 2% for every 10 deg F change in temperature." So basic math says that the higher your cold PSI then your 2% will be a higher number than what I get on a lower cold PSI tire.
The 'Tire Safety' site has been posted in many other threads on tires and provides very good information. IMHO.
Of course this all depends on road conditions, trailer weight, and speed. If your trailer is overloaded it would cause an increase in internal tire temperature which would drive up your hot PSI. I do agree with @Tgunter5 that your internal temperature does seem low for the increase in tire pressure.Mike & Lisa
Central Florida
2021 Imagine 2970RL
1996 Chevy K3500 Crew SRW 7.4L Gas
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06-17-2021, 02:20 PM #4
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06-17-2021, 05:15 PM #5
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About 70 degrees. The increases make sense, just wondering if that high a pressure is safe.
2020 Ford F-350 Tremor - upgraded with Air Lift 5K bags & S&B 60 gallon tank
2021 GD Solitude 3550BH
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06-17-2021, 06:02 PM #6
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I'm also running Cooper LTs with a max cold pressure of 80psi. I assume the manufacturers allow for expansion
2010 Jayco 26(SOLD)
2011 Keystone Outback 277RL(SOLD)
2021 Grand Design 268BH
2013 Ford F250 XLT, 6.2L Gas
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06-17-2021, 07:33 PM #7
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06-17-2021, 10:03 PM #8
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My G rated start out at 110psi. Most of the time they hit 127, 128. I have seen the hit 130 to 132 on a day when it's in the 90's.
2021 351MR
2017 Jayco 377rlbh (sold)
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06-18-2021, 07:47 AM #9
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My G-rated Sailuns go from 110 to 120-ish psi and temp from 70F to 105F. This increase to 144 seems with the 125psi tires seems reasonable.
New: 2021 Solitude 380FL
Prior: 2016 Alpine 3600RS
Tow: 2017 F350 Diesel Dually
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06-18-2021, 07:58 AM #10
Take the cited Marble guide with a grain of salt. His experience is not with heavy carcass tires ala commercial tires or these new ultra-high load range tires. That said, tire inflation pressures are always "cold". Around a 20 psi rise is within expectation, but also note that unless your TPMS sensor is inside the wheel its temperature is inaccurate. Finally, your best advice is advice right from the tire manufacturer, and a phone call should be able to net you good answers and a load-inflation table to boot.
Rob & Nikki + Cloverfield
2020 Grand Design Solitude S-Class 3350RL
2015 RAM 3500 Longhorn Laramie Crew Cab, Long Bed, 4x4 Dually Cummins/AISIN
Mountains of Pennsylvania
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