self.title sets navigationController and tabBarItem's title? Why?
OK, I figured it out! Here's what I am doing:
self.title = @"Title for TabBarItem"; // TabBarItem.title inherits the viewController's self.title
self.navigationItem.title = @"Title for NavigationBar";
the navigationBar would inherit self.title, unless otherwise set using self.navigationItem.title
//set nav item title
self.navigationController.navigationBar.topItem.title = @"zurück";
this did it for me :=) (nothing of the above worked)