Forum Discussion

Slownsy's avatar
Slownsy
Explorer
May 03, 2016

Tyre pressures

Weight of ouer F350 single rear tyers 1680lb front 2350lb. Tyers Michelin LTX A/T 275/65 R20 rated at 3750lb at 80 psi. Ford recommends 65lb front 80lb rear. According to michelins load and inflation tables I se 2080lb at 35 psi and 2475lb at 45psi.
What are others using and how low would you go.
Frank.
  • rhagfo's avatar
    rhagfo
    Explorer III
    lawnspecialties wrote:
    1ofmany wrote:
    My F350 calls for 65 front and 80 rear...that's what I use.


    X2


    If you are running that empty your rears are over inflated! That and the ride is like the Flintstones car, running on rocks!

    This is why there are inflation tables.
  • N-Trouble wrote:
    What is a tyre?


    The Brits spell it that way. As a matter of fact it is spelled that way in quite a few places outside North America.
  • shepstone wrote:
    N-Trouble wrote:
    What is a tyre?

    Protects the rims


    You mean ryms?
  • Ok tanks all I tried 60 front and 55 rear today, and much better, will try 55 and 50 later. It is a 350 Disel.
    Frank.
  • Ford, and all manufacturers, give you the pressure needed for the full rated weight. When you are running empty you can go down to the pressure needed in the weight charts. It can be a hassle changing the pressure every time you carry something in the truck so most of us inflate to something in between. If I have my 5th wheel hitch installed I leave the pressure for max rating. When I remove the hitch I reduce the rear pressure.
  • My F350 calls for 65 front and 80 rear...that's what I use.
  • That's about right I'd say.
    Being a 250, 2012 model you won't get away from the tpms light on your dash with the lower pressures unless you've had the pressure thresholds adjusted.
    I used to run 50/40 in my 2013 F250 gasser totally empty. Lower in the winter when it was all ice n snow.
    Just make sure you air up before loading er down for a trip!