I recently helped my friend mod his M5 he lovingly calls Bruno.
Put some 21" Interad DTMs on (my old wheels)
Brembo 380mm BBK front in Rose gold with classic type
RPI scoops in Rose Gold
Mirrors in Rose Gold
Full 2010 LCI Light conversion
other mods include full rpi except headers, H&R Springs...
Here's some shots I took recently of this Alpina
Definitely one of the most gorgeous cars I've seen
The wheels would have been better off in 22's but 21's cut it