Will this work? The tires I have are 215/60R16 on steel rims. I need new tires...so figure see if I can get the tC stock rims...but will they fit?

So let me get this right. You want to put tC wheels onto a Camry?

Camry bolt pattern = 5x114
tC bolt pattern = 5x100

So nope. Hope this is the question you where asking & the straight answer to.

what about the 18" EMX Super 7?

The lug pattern is the pattern that the car's lug bolts are in (in the tC's case, 5x100 means 5 lugs, with 100 mm between the centers of each opposing lug)

Basically, the 18's are also made for the tC so they won't work on the camry either

In the most simple answer. Almost any wheel that fits the tC will not fit a Camry. IIRC the Lexus IS300 uses the 5x114 bolt pattern so might want to look at some of those wheels. Just took a look & yes they share the same pattern. So only need to worry about back spacing.