I don't think that's going to work.. The recommended size for 17" wheels is 205/40R17.. with the 215/45R17, not only are you increasing the width, but you're increasing the size of the tires profile.. the profile increased by 14.75mm to be exact.. That's a lot.. Tucking my wheels in by 5mm more helped A LOT.. I had +35 offset 17's, and they rubbed at stock height.. Then I got a set of +40 (tucked in 5mm more) and they didn't rub even when I lowered the car.. So it's just something to think about..
Oh, I came up with those numbers by doing this: The profile in mm is equal to the width of the tire multiplied by the aspect ratio.. i.e. - 205 x .40 (.40 = 40%, the aspect ratio) and 215 x .45 and then I took the difference of the two..