Tire Pressure Monitor System (TPMS) --- Great add-on

I am a big proponent of having a TPMS. In my case, I'm in the travel trailer world with tandem axles. When one tire goes soft or gone, the other tire is in instant overload as it is taking most or all of the weight on that side of the camper. Just like what happens on a dully when one tire goes out.

I bought the TST brand (Truck Systems Technology)https://tsttruck.com/ and it monitors both pressure and temperature. Both are good info. I do use metal valve stems, and my truck is old enough, I added them to the truck too. The system saved me on the truck from bead seal leaks on the aluminum rims.

"Every" time before I leave with the truck and or camper, I turn the system on, let it warm up and I can see all air pressures before I start towing. If there was a slow leak while at camp or at home, it is easy to see it, and then deal with it before you head out. And naturally when towing you have it live all the time.

There is one type of failure the TPM will not detect before it happens, that is an somewhat instant depressurization like the tread just flew off and a second or two later, the whole tire lets go as there is no tread left. "

There is another type that the TST system will not detect. I hit a curb and the sensor was knocked off of the wheel and went into the gutter as I drove away. The system never alerted. According to TST that is because it "lost signal". If the sensor was knocked off it should have immediately read zero pressure and alerted. Nope!
The TST systems are also known for not sealing on some types of valve stems. Of course they don't tell you this when you buy it. I needed to replace the inner dually extensions several times before I could get it to work. I was not impressed with their product.