Here's a pic of the sensor mounted on rim (i believe they send an RF signal):
These just came today!! They are 18"x8 with the sensors already mounted. They come on the 2007 Expedition Eddie Baur edition..:
...just need to find some tires now...and the pressure receiver kit for in the cab!
zsommer79; I too need info on retrofitting the receiving end inside. Someone else on here posted a link to here for a kit called "smart tire":
I want one that will accurately read the actual tire psi inside. IF this works out i'd like to mount them on the MR2 track car:
and my street/track focus in the slicks(road coarse compound):