Sounds like a 67J! Goes w/o saying - ease back into the triple digit speeds on the autobahn!
Great choice on wheels... post pics ASAP! Found this site the most useful when playing with tire sizing:
http://www.rimsntires.com/specs.jsp
Can't forget the Tire Rack calculator...
http://www.e90post.com/forums/forumdisplay.php?f=12