It's worth noting that the Brabus 451 suspension is actually worse than the standard 451 suspension and only 10mm lower. In Europe, Brabus owners are fitting bog standard 451 suspension for better handling. The handling in my 450 was pretty bad and OK on the comfort scale, I didn't really want to lower the car as I thought it would make the ride harsher, I was very wrong. The Bilsteins lowered the car a lot and smoothed the ride out as the springs are progressive.