Impossible to find really wide shoes, but I gave this a chance.  Wear a 13 / 6e in new balance gym sneakers.  Ordered a 48 wide, but they were tight enough that I couldn't hope they would loosen up enough so returned them.  In retrospect, I probably should have tried the shimano triathlon shoes, as they are more forgiving.  Ended up getting a Lake triathlon shoe, in 48 wide.