I have to say I don't agree so far, my old IS220d was much more stable. Taking bends at higher speed in the 250 feels like I am in a boat! Tyre pressures are correct, maybe it is just a soft suspension but I don't have anything like the same confidence in the 250 as I did in my 220d unfortunately, and it is certainly less fun! No doubt the 250 is built for civilised comfort only...?
Re the previous post, as an Advanced and "response" trained police driver I do know how to take bends but (just for example) in the "quick flowing series of fast bends" type roads which usually suit and allow continuous on/off throttle control mid corner it just does not feel right at all, as I say the car is rocking like a boat and does not feel glued to the road like other cars I drive, maybe it is just a characteristic I need to get used to or maybe a sporty Beemer would suit my driving style better (I'm not a mad boy racer though, always drive to the car and conditions - honest!)