I answered it too. But I had 235/40's on 18'x8's for a while and they didn't rub unless I went over a big bump or had people riding in the back of my car. But I was lowered 2". At stock height you'll be fine, and if you lower the car you'll rub like I did. If you try to slam it, you will rub nonstop.
Some have said coupe wheel wells are a little wider, don't know how much validity that has though.
thx again man, this was helpful !