Mr. Mark (respectfully), before getting a TPMS, I used to check every time I stopped to see if my 5th wheel tires (doing the bang test) were holding air, and regularly checked air pressure. Then, one day after getting gas in Limon, Co., about 20 miles down 24 HWY, one tire came apart. I didn't hear anything, or feel anything, or know anything until someone pulled up along side me and pointed at my trailer tire yelling something I couldn't hear. I pulled over and found the side of my trailer ripped up, one tire mostly gone in shreds, and the other very hot.
I will never be without a tire pressure monitoring system ever again. I use them now on my motorhome AND toad. It's nice to be able to scroll through each tire on the monitor and see how pressures are doing.