Update:
Well my 4 tires are 3.
And I'm not the only one in the building with missing stuff...
Or just opened/messed with....
It involves all 3 carriers: USPS, Fedex, UPS
Since this is a group of 3 apartment buildings, and only my building has the problem, pretty sure only a non-neighborly neighbor is the problem.
Tires where shipped USPS: does USPS inspectors involve in $70 steals?
Amazon made me whole in 20 minutes.
Supposed to receive the 4th tire at my work Tuesday (expedited shipping at no cost).