[twindman]

I was pulling onto the I10 near Las Cruces NM. I just reached speed of about 60mph and the alarm went off. I looked at it to see how low it was and when I looked up I just passed an exit!!! Pulled off on the top of an overpass with about 18 inches to the guard rail and 18 inches to the white sideline on the road. It was 45 psi when I looked, it was 25 by the time I stopped. It was not resting on the rim at first but by the time I put up my flashers about 50 yards back, the rim was resting on the ground.
Turns out I had a big screw in the tire. Because I got stopped so fast there was no damage and the tire was able to be plugged/patched. I was due for new tires anyway, so I chose to drive it home (400 miles) on the fixed tire. Got home fine. But I am pretty sure without the TPMS I would have ruined the tire at the very least and probably some trailer parts if the tire shredded.
Wouldn't be without.