the best advice on this is to cut them no narrower than your hips, however narrow the gap you get your 12 inch bars through is, your hips have to follow.
not true, bar heights for some riders are at car mirrors, but the riders hips can be above their bars, so your theory doesn't really work
not true, bar heights for some riders are at car mirrors, but the riders hips can be above their bars, so your theory doesn't really work