I just wanted to see if the 3.0 sport ride was as harsh as the 4.4 sport. Does the fact that the 3.0 has all season tires instead of performance make the ride any smoother or is the ride purely based on the suspension. I know, I know guys will say I'm being a dumb blonde, but I wasn't sure what affects the feel of the X5, suspension, tires or both. I want a 3.0 sport because of the looks, but don't want the ride to be too stiff. Thanks in advance.