11 Chevy impala

Yes, like you said the tires are too big. All you need is a lower profile tire. Where to the tires rub? I am not understanding the need for wheel spacers. But if you go to a tire shop they should be able to help. They would look on the door jam to see what size tire the vehicle takes, then match up the proper profile, (diameter of the tire). Also 245/45/19 tires do not fit on a 16" rim. You would have to have 19" rims.

I have a 2009 impala and wanting to do the same wheels. But the bolt pattern for those wheels are 5x120 compared to 5x115 that go on these body style impalas, I’m assuming that’s why you had spacers because they were actually adapters? Also what size tires did you end up going with