This IMO is what makes the perfect ride/handling combo for the 5: Make sure you order Adaptive Drive (DDC+ARS) and replace the OEM runflats with a non-runflat tire like the Conti Extreme Contact DWS or the Michelin Pilot SS. You will have a very nice and cushy ride or a firm but not harsh sporty ride at the touch of a button - two cars in one!
BTW, if you add IAS (Integral Active Steering) to your order the car will feel much smaller with a tighter turning radius.