I currently have a 2019 hatchback with the RS package and 18 inch wheels. Since 225/40R18 winter tires are pricy, I've been thinking of getting 15 or 16 inch steelies and winter tires to go along with them. However I want to be able to install the GM Performance brake kit later, so I'm wondering if 15" or 16" wheels would be too small small afterwards.