Originally Posted by e93
No TMPS sensors in Australian delivered cars. Mine is March 07. Instead the computer uses feedback from the ABS system. It monitors wheel rotation speed. A flat tyre will change the speed of rotation. Better system IMO as you can mount and change tires/wheels without worrying about those damn sensors.
That is the older system. I have that and my buddy's E39 M5 does too. It uses a logrithym system I believe.