I am not completely sure what you are asking here.
If you like the wheels that are on your car and the tires for that sized rim are reasonable, just stick with the rims you have. Have had fair results with uniroyal tiger paw touring tires on the 17 inch factory wheels that came on our 2012 lt, and the tires are not quite as expensive as what 18's or 19's would be. Only issue I would note is that factory aluminum rims are not made to take potholes, they will easily bend and even can break/crack, don't think that is gonna change with size.
If you like the wheels that are on your car and the tires for that sized rim are reasonable, just stick with the rims you have. Have had fair results with uniroyal tiger paw touring tires on the 17 inch factory wheels that came on our 2012 lt, and the tires are not quite as expensive as what 18's or 19's would be. Only issue I would note is that factory aluminum rims are not made to take potholes, they will easily bend and even can break/crack, don't think that is gonna change with size.