Jon:

I do have TPMS on my bus. At no time on recent trips did I receive any sort of low pressure reading or faulty indicators. In all fairness one must also realize I bought the coach used from Liberty. Thus we do not have an absolute tire history. As for tire date we do have a DOT date of 1506 on the blown one.
Tread Design Pilote XZA1

FYI the four new tires on the drive axle are DOT dated:

3310

They have approx 11 miles on them. Am I afraid of them; you better believe it!