Shifty 
2006 BMW 5 Series Sedan 530i 4dr Sedan (3.0L 6cyl 6M)
BMW's Colossal Blunder
 Great car, fun to drive... but impractical!  The sports package  comes with run flat tires and a donut.  No room to put in full sized tire in the well.  But  I am better off than those with a 2006 or later 3 series who have no spare at all..  Get a flat wiith these babies and you can go 150 miles.  You can put on the donut and  go about the same distance.  Get a flat tire over the weekend like I did and you are out of pocket for 2 days. Nobody, I repeat nobody stocks the odd ball tires.  This is a MAJOR flaw in the BMW.  Hear that Edmunds?   BTW, the run flats are not repairable, so you are looking at over $300 a pop for a flat. Also they ride terribly and have 15,000 mile tread life.