Wanted to make my TSX look a little different so I went on Tirerack and decided to go up an inch and I went with the recommended size which was 215/45/18. I am seeing now that I should've gone 225/45/18. Is there anyone with a TSX with 215/45/18s on them, will it look terrible? They are on their way so I can't turn around. Maybe when these are worn I will go a little wider.

It'll be fine. Any of the following sizes work:

215/45/18
225/40/18 (Acura recommends this one)
225/45/18
235/40/18 (I have this)

Thanks! Guess I could go a lil wider next summer. Initially I didn't realize my stock were 215s too LOL My TSX is PWP and I went with some black painted ones.