We picked up a used Arriva last week. It's an XL and fits up well since I'm 6'1" and my wife is 6' even. The bike came with 45cm captains bars and a 47cm cow horn bar for the stoker.
I usually ride a 42 and the 45s seem pretty huge. I can see wanting a wider bar for extra leverage balancing the bike at stops, but I'd rather go to a 44 or 42 and get a fit more like my road bike.
Same thing for the back, the cow horns are pretty huge. My backside fits easily between 42s which would be much better for my wife, so I see no reason not to change them out.
But what about the front end? Can I go to a 42 also and still have good leverage on the bike or is it normal to use a slightly wider bar?
(all measurements are c/c)