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TNrob's avatar
TNrob
Explorer
Aug 12, 2016

Update page 3: Tire pressure factory recommendations.......

I'm trying to get Ram to do something about the danged TPMS on later model 2500s. I understand that the TPMS used to have a toggle, that the pressure recommendations used to be for heavy and light loads, and that up until just a couple of years ago the computer could be reprogrammed to "ding points" other than factory.

Would you guys please help me compile a small list of factory inflation recommendations over the last decade or so?
Tow Vehicles
  • TNrob's avatar
    TNrob
    Explorer
    Aug 12, 2016
    2016 2500 with LT275/70R18 is 60 Front (GAWR = 5500), 80 Rear (GAWR = 6500).

    Actual scale weight for daily use (in my case) is 4000 Front, 3000 Rear.
  • Me_Again's avatar
    Me_Again
    Explorer III
    Aug 12, 2016
    TNrob wrote:
    I'm trying to get Ram to do something about the danged TPMS on later model 2500s. I understand that the TPMS used to have a toggle, that the pressure recommendations used to be for heavy and light loads, and that up until just a couple of years ago the computer could be reprogrammed to "ding points" other than factory.

    Would you guys please help me compile a small list of factory inflation recommendations over the last decade or so?


    Stay away from 2500's, the 3500's only display tire pressure!!!! Chris
  • TNrob's avatar
    TNrob
    Explorer
    Aug 12, 2016
    Yeah, yeah, but the deed is done. Now I'm pestering Ram.
  • Me_Again's avatar
    Me_Again
    Explorer III
    Aug 12, 2016
    TNrob wrote:
    Yeah, yeah, but the deed is done. Now I'm pestering Ram.


    You and about 75 percent of the 2500 owners. Some have gotten a RAM tech to lower the rear tire alarm despite the company policy.

    Chris
  • braindead0's avatar
    braindead0
    Explorer
    Aug 12, 2016
    As I understand it in 2015 they implemented a new protection scheme for the ECU so far effectively locking out tuners. Diablo has their own PCM https://www.diablosport.com/news/2015-2016-ram-1500-v6-5-7l-2015-ram-25003500-6-4l/

    However it doesn't mention TPMS, I suspect that might be controlled by the BCU.. not sure.

    You should be pestering the feds that mandated TPMS..
  • Me_Again's avatar
    Me_Again
    Explorer III
    Aug 12, 2016
    Maybe go to www.safercar.gov and file a complaint that the truck is unsafe to drive unloaded because you can not lower rear tire pressure. Stating that the over inflated rear tires effects handle, decrease braking and are subject to impact damage when over inflated. Chris
  • braindead0's avatar
    braindead0
    Explorer
    Aug 12, 2016
    Me Again wrote:
    Maybe go to www.safercar.gov and file a complaint that the truck is unsafe to drive unloaded because you can not lower rear tire pressure. Stating that the over inflated rear tires effects handle, decrease braking and are subject to impact damage when over inflated. Chris
    Capital idea! I haven't had any similar problem with my 1500, I can run the tires at 32PSI no problem, TPMS seems to kick in around 30 (haven't really confirmed that). I can see this being a HUGE program for 3/4ton and larger though....

    Good luck, you'll need it... might have to change your handle to Don Quixote ;-)
  • goducks10's avatar
    goducks10
    Explorer
    Aug 12, 2016
    My 12 Ram 2500 psi from the door placard says light load 45r-65f. Heavy load 80r-75f. I have no problem using the TPMS button on the dash to go between the two.

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