A few factors....
-leases not turned in yet
-bad economic conditions
-by 09, prices were reduced so much for CPO M5s that people did not see the need for a new one, and the unpopular larger mirrors may have swung more people towards CPO cars (2010s had the new iDrive which prompted more to buy them, IMO)
-lastly, I don't know if this is true (someone please correct me if I'm wrong), but it seems like 09, like 07, was a pretty short production year. One day the new 09s come out, and then before I knew it I started seeing 2010s with the new nav being sold.
afc1
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