You must be a big lad. I run 42's on my bike and when I rode a bike with 44's on they felt enormous. Can't imagine what 46's would feel like.

But on the MTB I used to ride with 24" straight bars. I went to risers that were 27" wide and just thought I would cut them down once I had got used to the rise. Took two rides and I had adjusted to the width and 9 years later I am not getting rid of those bars or cutting them down.