How many of you guys have or do not have a TPMS?

We have a TPMS system on the fifth wheel (truck came with one, of course). The system on the RV saved us from major damage when one trailer tire took a piece of rebar right through the tread. There was an instant, total loss of pressures, but the TPMS alert allowed me to get to the side of the road and stopped almost immediately - before the tire started disintegrating and taking out the underside of the curb side slide. Our system monitors temperature as well as pressure.

Rob