I have the sports package with the 18" wheels and find the ride to be fine. I do about 70% highway driving and 30% city driving. The only time I find the ride to be harsh is when I am driving down old city streets with lots of cracks and potholes. The handling of the sports package with the wider upgraded 114 wheels and performance tires is excellent.
2005 X3 3.0i
Silver Gray Metallic
18" Y Spoke -Style 114 with Performance Tires
Chrome Exhaust Tips
IceLink for IPOD