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.

__________________
Ron

2005 X3 3.0i
Silver Gray Metallic
Activity Pkg.
Premium Pkg.
Sport Pkg.
18" Y Spoke -Style 114 with Performance Tires
Chrome Exhaust Tips
Hood Protector
IceLink for IPOD