Question about tire pressure monitoring

[Mike Borowski]

I inflate my stock size 18" tires to 36psi, I like it a little firmer.   I always do it cold (haven't driven in 10+ hours).  When I check the pressure in the center dash screen, it's always like 3-4psi higher after driving a little.  Anyone else experience this?  Does your dash match the pressure you put in?

[davidr83]

As you drive, your tire heats up from the road contact/friction, which over time will heat up the air inside the tire causing an increase in pressure. Some tires will more than others but it's normal to see this.

[newdude]

Normal.  dram1983361 pretty much nailed it.  

 

Also to add to this, every 10 degrees of temperature either up or down results in a 1psi change.  So if on a 30 degree day its at 35psi when you hop in the truck for the first time, on a 60 degree day it will start out at 38psi.  

Edited December 18, 2020 by newdude

[Grover67]

The sticker inside the driver door and pressure on tire is always rated/checked(cold). Like the others mentioned about the change in temperature the pressure will change accordingly.

 

-Grover67