Some e9x have tpms capable of individual tire sensing. Late 2011 due to parts shortage bmw went back to a system that senses all tires (detects individually but cannot distinguish from which tire it is recieving)
There is an entry (actually multiple) called druck or drucker (german
ressure that i amcurious about changing to aktiv but i am a n00b. Np one has been able to speak to these parameters when i have asked this question previously.