Taos
As I said, "if you had a good TPMS system", then you wouldn't have to worry about all of those issues
By the way, tests have proven that an experienced trucker with a thumper cannot discern lower tire pressures (I'm not talking about flat or very low and I don't have a link to those tests). And none of your 3 checks work very well when you are driving down the highway where most blowouts occur. And it sure is nice to be able to check tire pressures when it is raining without getting wet 
Hi Bernie,
I can tell that you bought one and trust it. I'll wager that even a "good" TPMS will fail from time to time, likely when you are driving down the road in the rain and get hit by lightning. If you get a false positive, what do you do? Probably get out, look at the tire, thump the tire, pull out your manual pressure gage, check the pressure and either call for road service or continue the trip? If you get a false negative, you still have a problem and
don't know it and won't even bother to do a visual, mechanical and thump check when you stop for gas or lunch.
NASA has
every safety system, monitoring system and technical gizmo known to man and they still lost two. A $2B AF jet has every known montoring system available and they still lose several every year. These systems are quality checked minute by minute (or milli second by milli second), monitored by a herd of engineers, technicians and maintenance folks and they still crash. The "best" TPMS is mass produced (probably in China) and sold at a huge profit. It is, maybe, tested once at the factory and then installed by a technician that does maybe two per month. My "trust" level would not be very high... maybe it is better than nothing but how do you know, for sure? I don't get it.
Rigorous manintenance and "passive safety systems" like "Run flat tires" as a backup... that makes lots more sense to me. I believe "passive" safety sytems will save more lives than "active" safety systems every time. In My Humble Professional Opinion. Thanks for your discussion.