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Old 04-20-2021, 09:36 AM   #38
kingdaddy
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Join Date: Dec 2010
Location: Anytown
Posts: 609
M.O.C. #10966
Quote:
Originally Posted by scottkeen View Post
FWIW, I have my TST 507 TPMS alerts for the trailer set to:

Low Pressure alert = 90 psi (10% below 100 psi)
High Pressure alert = 125 psi (25% above 100 psi)

The 10% low and 25% high alert thresholds is what the TST 507 user manual recommends.

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Sidebar: The TST 507 TPMS alerts for my 2007.5 Dodge Ram 3500 DRW truck are set to:

Front
Low Pressure alert = 58 psi (10% below 65 psi)
High Pressure alert = 81 psi (25% above 65 psi)

Rear dually
Low Pressure alert = 54 psi (10% below 60 psi)
High Pressure alert = 75 psi (25% above 60 psi)

I didn't know what pressure to fill my rear tires to, the sticker on the inside of the door says "Front = 65 psi, Rear = 40 psi normal load, 65 psi max load" so I figured 60 psi for the rear was some compromise between 40-65. What do you have your rear truck tires filled to?
Most of the guys with duallys that I know that tow heavy are running lower pressures in the rear duals when not towing (between 40-50 psi.) Depends on the tires of course...usually the stock tires are E rated with 80 psi max cold pressure. Nobody I know runs them that high. I run 65 fronts and 45-50 rear, bump it up to 65 when towing. But I'm also running non stock tires, although still rated at 3,195 lbs @ 80 psi according to the sidewall info.
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2011 Montana 3580RL with a Reese 20k GooseBox w/offset B&W ball, Sailuns, RoadMaster shocks, Splendide stacked washer/dryer, some other stuff...
2015 Ram 3500 DRW Laramie Megacab, Aisin w/3.73s, 255/80 17 Toyos A/T III, rear auto level, 40 gal. fuel/tool combo box, some Banks mods...
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