 This car is very nice. The ride is more sport than luxury as one would expect from a BMW. The interior is well thought out and the controls are very easy to use. The 8 cyl engine gives incredible power! Love the side sun shades! 10 way adjustable seats are incredible. One thing to investigate if looking to purchase is oil consumption! Twin turbo seems to consume an unusual amount of oil! I've investigated issue through forums and BMW service. 1 quart per 2-3 thousand miles supposedly is within BMW guidelines. Some mechanics say this is crazy some say this is normal. The car monitors engine oil level with an easy to read picture. Topping off oil is very easy to do. I would not purchase this car without a warranty! Having owned several BMWs I would not want to reach into my pocket for even the simplest of repairs. Very good in the snow. Run flats have come down in price so tire purchase is acceptable. Please note if replacing tired get ready to purchase all for at one time! Tire wear between tired has to be within a certain range or damage to crankcase can occur.  Forget replacing two!