Normal
If the suspension springs ( shock absorbers) are tight, there will be less body roll and up and down movement but when you go over a bump, it feels harder because the tight springs don't absorb the shock so much.....me thinks. You need toight suspension settings because at high speeds, everything gets magnified...its not 1 mini bump you go over but 20 because you are travelling 20 times faster than normal. So, you don't want to mess around...you want tighter sports performance suspensions. You want a BMW.