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Old 12-17-2018, 03:08 PM   #1
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TPMS Conundrum

I'm curious how some of you might be handling the recommended tire pressures posted on door Jambs? New 2018 2500 reads 60/front, 80/rear. based of coarse on max payload. the problem when lowering the pressure even 5lbs in the rear and the pesky light comes on at 75, while not on the front set to 60 calling the dealer they say for liability reasons cant re calibrate the sensor, the manufacture says 80 run at 80.

Here is the problem I have with this before TPMS we adjusted tire pressure to accommodate the load, because most of us weren't loading our trucks to max 24/7. with just me and tank a gas in 2018 RAM 2500 I know I'm well below max payload and I'm running on the factory tires that are overinflated (although at max) if
I continue this practice I'll wear out middle everyone has seen those charts that display over, under and properly inflated tires. The thinking I thought was keep ALL the tread in contact with the pavement. The aforementioned vehicle recommends 60 in the front 80 in the rear although the tires are rated E max at 80....I agree that 80 is required under MAX load, but day to day, 80 lbs. has me riding the center of the tire NOT SAFE"

Should I just lower the TP and deal with the warning light, or is there a work around out there on the TPMS system? Thanks!

BTW my last truck with E range tires from the local Les Schwab recommended running at 40-ish and then bumping it up for loads and trailering no TPMS system on that truck
Thanks Again

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Old 12-17-2018, 03:18 PM   #2
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Some of the bigger tire shops have TPMS programmers. Might want to give it a shot, unless the PCM on the newer trucks are too smart for their own good.
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Old 12-17-2018, 03:38 PM   #3
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Do you have the light load button. My truck 2012 has a low load pressure button yours may need to be enabled they your cluster controls. Mine allows me in light load to run 60 front 45 rear.
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Old 12-18-2018, 04:17 AM   #4
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Thanks, and no, no Low load pressure button
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Old 12-18-2018, 05:05 AM   #5
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Old 12-18-2018, 09:39 AM   #6
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Old 12-18-2018, 11:12 AM   #7
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Old 12-18-2018, 10:35 PM   #8
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This is a newer 2500 "issue" that people across all forums are frustrated about, personally I don't seem to mind the 80 psi nearly as much as most people. While my truck is a driveway queen throughout most of the year, at 25K the original tires have worn evenly and well at factory recommended settings.

Don't remember if this is a no-no or not but in the aim of providing helpful information try taking a look here. Many people seem have had success with it, it's a long read but lots of info so well worth it IMO.

https://www.cumminsforum.com/forum/2...-pressure.html
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Old 12-20-2018, 09:24 AM   #9
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