Beautiful Sapphire Black Metallic F85 X5M fully loadedOne Owner, Clean Carfax- No Accidents, No DamageFeatures Include:Sports Seats and Steering WheelProfessional Navigation with RealTime TrafficConnectedDriveHeads Up DisplayExtended LeatherAmbient LightingFront and Rear Heated AND Ventilated Seats with Climate PackageAdaptive HeadlightsAutomatic Highbeam AssistantReverse Camera with BirdsEyeView/ PanoramicPanoramic Sunroof and Rear SunshadesSoft Close DoorsFull Anthracite HeadlinerCarbon Fiber Interior Trim 115.5-inch wheelbase and a suspension tuned for M-level dynamics. Firmer bushings, stiffer springs, modified upper wishbones with revised geometry, and a 10-millimeter drop in ride height set the X5 M apart from the base X5; both the X5 M and X6 M come with a self-leveling rear air suspension and unique 21-inch wheels as standard.Operating the X5 M in a polite manner is entirely possible. The interior, with its full Merino leather upholstery ($2900), Bang & Olufsen audio system ($3700), and Executive package ($4500; heated steering wheel, ventilated front seats, heated rear seats, rear window shades, head-up display, and more) certainly encourages reserved behavior.The problem is that after you get your first taste of the torque rush provided by the mighty V-8, that heavenly interior becomes command central for raising hell. The run from zero to 60 mph consumes just 3.8 seconds and the quarter-mile flashes by in 12.3, this brain-warping BMW tripping the lights at 115 mph. The response is nearly instantaneous, with all 553 lb-ft of torque present and accounted for by 2200 rpm.For the sake of establishing some order in this competitive set, consider that the Porsche Cayenne Turbo S performed the same tasks in 4.1 and 12.5 seconds, the Mercedes-Benz ML63 AMG in 4.2 and 12.6. By those measures, the X5 M is the king of the luxury-SUV drag strip. But change is constant, and both of those makers already are ushering more-powerful models into their lineups: Porsche's 570-hp 2016 Cayenne Turbo S hit the streets earlier this year, and the 577-hp Mercedes-AMG GLE63 S coupe isn't far behind (although the latter is more a competitor for the X6 M).