I have a 2015 F350 and according to the sticker inside the door my tire pressures should be 65psi front and 80psi back. What does everyone else run? I have found that 80 in the back is to much for just the normal day to day driving and I have mine normally at 70psi. Also what is the threshold for the tire pressure monitors to go off? From what I have found there seems to be no definite answer to this question. The guy at my dealership told me I should be running 80psi in the back all the time.

 

my understanding is 60 and 60... my sensors complain at 55 or so...

some use the white chalk on the tread test to find a Flat profile..
but you need a real Flat Road ... I do not have flat roads.

 

The guy at the dealership was very rude so I didn't want to stay and argue with him. He just kept telling me that the back tires had to be at 80 or the sensor would go off.

 

I have been running 60 and 60 since July.... except when towing... then 65 and 80.

No deflation light.

 

I run 65 front and back when empty (which is most of the time). Run 80 on the back when running light and it'll take the center off the tires.
ps
2002 f250...don't have to worry about deflation light!!

 

Currently the back are at 80, I think I am going to turn them back down to 65 and see what happens. Someone might know this but since it does not tell me which tire is low does the tpms know which are front or back?

 

my tpms goes off at 65. but my stock air pressures are 75/80. I set my pressure for the rear at 68, Front at 70.

 

I set mine down at 50 unless I'm towing/hauling. I run aftermarket tires/wheels and I don't care about the light. I check the pressure manually every couple weeks like I've done for 30 years.

 

I dunno about others experiences but I've run 80psi in the rear for years and many different sets and brands because I haul often. I don't air down when I dump the trailer off and air up when I hook up. With proper rotation I've never notice any wear problems from over pressure.

 

Yes, It knows the location of each wheel....

read the owners manual ... to reprogram the sensors... it tells how it knows..

need to be reprogrammed when you rotate tires...