Its not a big increase in width but I have found that fitting wider tyres in this sort of situation gains little and can just cost more for the sake of it.
On the downside it reduces what I woud describe as steering feel and increases "sidewall wallow" I would only increase width on the same aspect ratio with a correspondingly wider rim.
The answer is yes but wont make any real difference, might look a little better, instead if you want a beefier look try and widen out the wheels a little either cheapie with spacers or a nasty set of offset wheels :sly