Hi all. I have a dilemma on which wheel size to go for. The 19 MSport option alloys look great however I'm concerned with the potential for a crashy ride. I test drove a Z4 with 19s and found the ride acceptable however the car was brand new and I have noticed with previous cars the ride deteriorates with time. I have had a couple of 1 series with 18s in the past and the ride was crashy on them. What are people's views on ride quality - I expect it to be hard but is it acceptable? I'm coming from a c class coupe which is v comfortable even with AMG sport suspension. Will the 18s be more comfortable?