[bmwroadsterca]

There are some really bad posts in this thread that are totally erroneous. I never thought that tire pressure could be so misunderstood. Take an empty drinking water bottle with the cap screwed on tight up in an aircraft and watch what happens. Unscrew the cap at altitude then screw it back on tight and check the bottle when you land.

Sent from my SM-T813 using Tapatalk

 

[bmwroadsterca]

Perhaps people are overlooking that the TPMS may get readings of the pressure inside the tire from the sensor therein as well as barometric pressure from the BMSK's sensor.

Sent from my SM-T813 using Tapatalk