I would love to have 16" or 17" rims, and 7 wide on my fc3s 4lug. Keeping the stock body. Not interested in buying wheel spacers. Will be lowing an inch. A nice clean, none rice look is what I'm looking for. I saw these rota rb 16x7 4X114.3 offset +04 hub bore 73.

 

what about +24 offset?

 

The OEM 16" TII wheels (S4 and S5) are 16X7 with +40 offset, so the first set of wheels you're considering (+04 mm offset) would stick 36 mm further out of the wheelwells than stock. Since you mentioned "clean" and "non-rice", this is probably too much and would look a little silly with a 7" wide wheel anyway. The +24 would be 16 mm further out than stock, but is probably within reason. As for the centerbore, 73 mm is OK because it is larger than stock (which is 59.6 mm). You can always get some hub centering rings if you are concerned about your wheels being hubcentric; I did this with a previous set of wheels. You might want to do a search to read various opinions on this subject.

If you haven't already looked through it, you might also want to read this thread:

https://www.rx7club.com/suspension-wheels-tires-brakes-20/official-fc-wheel-fitment-thread-257700/