We're using eclipse as our official tool, so the 80 character line width restriction is an anachronism. Even google allows up to 100 characters per line (http://google-styleguide.googlecode.com/svn/trunk/javaguide.html#s4.4-column-limit). However, I did look into the standards that we adopted, and the 80 character limit is apparently in there. I'm going to contact the team to eliminate that.

I actually do aim for around 80 characters, but I also consciously think about what looks best and is most readable, and I'm willing to exceed it if it improves readability. 

Of course, if you want to use an auto-formatting tool on a pre-existing document, just recheck the document to ensure that what your tool changed was logical.