I've searched the site and come up dry. The only marginally useful thread brought this up:
http://www.bimmer.info/forum/attachm...ntid=624&stc=1
So this is the North American passenger side. Great. So what's the recommendation for the Driver side? I flipped through some books and they all say 24" for Passenger... but N/A for Driver side. Apparently you don't need a wiper for the driver! :)