It makes sense to use metal valve stems due the weight of the sensors, now the big question is do I have metal valve stems? See the pic below. The end of the valve stem appears to metal (brass). The base (closes to the rim) on the other hand looks to be rubber or plastic (can't really tell), but I wiggle it a tad. So can these support the screw on sensors? I'm think not!
Sorry...I can't figure out how to post the picture :(
I'm not surprised that the sensors are not interchangeable between brands, I guess that explains why the sensor theft is so low.
Hiding poor host-sensor reception is the only logical reason that I can think of why a TPMS maker would design system that keeps posting the last know value when a sensor is lost. So rather than let the driver know that he is driving without monitoring a tire or two, they keep giving him false data....Nice! A few have said that they have seen it take an hour or more for the system acknowledge a lost sensor. I don't know how others feel, but in my opinion that's really shameful.
I sent a bunch of emails to the US made TPMS makers asking them what happens when a sensor is lost. I'll let you know what they say.