I have been messing around with reading the Wear And Tear Check Progression SimVar using SimConnect. From what i can tell, there is no way to pass the component index (or am i mistaken?) IE for the tires “WEAR AND TEAR CHECK PROGRESSION:37” will return the percentage wear on tire #1 , but how do you access tire #2 etc. ?
Have you tried just tacking it on at the end after another :? eg.
WEAR AND TEAR CHECK PROGRESSION:37:2
I can’t find it now, but I saw this used/documented somewhere. AFAIK component names can also be used like that, eg. something like
BUS BREAKER PULLED:1:'Bus_1'_n
But don’t quote me on that… unless I’m right… 
Cheers,
-Max
Appreciate the reply! You are right on the same track of thinking I had - i tried a number of those combinations but unfortunately in the SimConnect inspector it just returns a not found error.