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M.R.E.

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Posted: 04/23/20 02:24pm Link  |  Quote  |  Print  |  Notify Moderator

The tires on my 5th wheel state 80 psi max. I run 76 to 78. What should I set upper psi setting and lower psi setting on my tire pressure monitor system ?


toolmaker

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Posted: 04/23/20 02:51pm Link  |  Quote  |  Print  |  Notify Moderator

Mine is a TST and I just followed the guidelines they offered in the set-up manual.


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CarnationSailor

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Posted: 04/23/20 03:19pm Link  |  Quote  |  Print  |  Notify Moderator

My tires have a max psi of 110. I inflate them to 105, set the upper limit to 115, and the lower limit to 100.


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2oldman

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Posted: 04/23/20 03:54pm Link  |  Quote  |  Print  |  Notify Moderator

70 and 90

cummins2014

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Posted: 04/23/20 04:02pm Link  |  Quote  |  Print  |  Notify Moderator

CarnationSailor wrote:

My tires have a max psi of 110. I inflate them to 105, set the upper limit to 115, and the lower limit to 100.


10 psi over didn’t work for mine they go over 10 psi when warmed up , had to go a little more to keep the alarm quiet .

fj12ryder

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Posted: 04/23/20 04:22pm Link  |  Quote  |  Print  |  Notify Moderator

Ditto, I run my tires, which are rated at 110 psi, at 100 psi and they will routinely get over 115 psi when it's hot outside. My TST is set at 125 psi.


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Beverley&Ken

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Posted: 04/23/20 07:23pm Link  |  Quote  |  Print  |  Notify Moderator

If I remember correctly, TST recommended the low pressure set 10% below and 20% above the starting cold pressure. My rear axle 80 psi starting, Low setting 72 psi and high at 96psi. I eventually changed the 96 to 105 after a long interstate drive, 100+ outside temps and sunny. The TPMS was reading a consistant 100.

Ken


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Posted: 04/24/20 10:23am Link  |  Quote  |  Print  |  Notify Moderator

Info with my TST suggested 20% above and 10% below.


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neal10a

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Posted: 04/24/20 01:00pm Link  |  Quote  |  Print  |  Notify Moderator

My tire runs at 50 degrees above ambient while driving the Interstates. If I start out at 105psi they get up to 120psi while driving. Setting the upper limit is not as important as the lower limit IMHO. My TPMS sets those limits automatically and I believe the upper limit is 140 psi and the lower limit is 90-95 psi. It monitors temperature as well and that is set to 170 degrees.

laknox

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Posted: 04/24/20 02:16pm Link  |  Quote  |  Print  |  Notify Moderator

I don't have a TPMS but the IR temp gun I have shows an easy 40+ degree temp increase, with about 20 degrees difference between sunny and shaded sides, when towing here in AZ in the summer. One reason that I've always kept my tires within 5 lbs of max cold psi, even when I went up a load rating.

Lyle


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