Here's a true quandary :
I KNOW my TPMS sensor and light works, because with the onset of cold weather here, it was on, I checked the pressure and found all 4 below 25 #'s.
After inflating to 33 rear, 32 front, the light went out.

I recently acquired a complete set of 7 spoke wheels and tires, and being the curious George that I am, I decided to try 18's all around.
I put them on the rear and drove probably 30 or so miles testing it out, including several full stop accelerations to 60.

THE TPMS LIGHT NEVER CAME ON !!!

Now, I askya, how in heck did the computer NOT turn the light on ?

( BTW, 18's on the rear looked awful, I put the 19's back on )