Clarifying question: are you looking to change wheels (and wheel size) or trying to get things flush with stock wheels?
Assuming you're looking for new wheels....
Rear: 18 x 10 ET25 or 18 x 9.5 ET 22 will be close to the outside of the fender, 18 x 10 ET 32 is going to rub, and is not going to be close to the outside fender. Here are
two examples, on 9.5 ET 22 rear wheels, one with 265/35 rear tires, and one with 275/35 rear tires.
Rated M Roadster has 18 x 10 ET25 rear, and that
does need to run some extra negative camber to fit with 275/35 tires, but he is also running coils and sitting lower than stock.
Front: 18 x 9 ET42 should fit up front as long as you're not running camber washers which push the strut towards the tire/wheel. I am running camber washers, and I need to run a 5mm spacer (ET37) to get it to fit. Stock, stock settings, it should be okay. You may want a 5mm spacer, which you can always add later if needed to get it closer to the fender. Or you could go with a 9.5 ET35 wheel--but that will require more negative camber to tuck in than the stock max of ~-1.2 - - 1.5 negative camber.
These things can require a bit of fiddling, as there are a lot of variables in play: suspension (stock or lowered), alignment (negative camber, and negative camber source [washers vs. plates]), tire type (square shouldered vs. rounded).