As i originaly said I know you can get aftermarket Bosch aero blade conversion kits but I don't like the way the old style hook on the factory E53 arm has to attach to them as it leaves you with an awkward looking big lump in the middle of the blade ( although Bosch have done a reasonable job of hiding it) as well as making the arm it's self sit further off the screen and I'm just of the opinion the OEM aero blades are far superior to the old fashioned blades quieter, better performance ( especially at higher road speeds) and they last longer and just look more modern and sleek. IMO