I'm picking up my 2010 750ix next week and am seriously contemplating different wheels (maybe 21s!). In any event, at inspection last week the wheels were in perfect shape, no rash or dings and the OEM Pirelli summer tires have less than 10K - car has only 16K and is coming with separate set of winter wheels/tires.
I'm not big into the hassle of shipping tires, but if you're in the Chicago area and interested, I'll snap some photos - or we can meet up for you to inspect. New this set up is silly expensive - like close to 5 grand for the package. I'm looking for $2500, including tpms sensors and center caps.
Post if you are interested