Could you take a measurement from the 3P bracket (outside edge of pipe) to furthest point out on the case? These could make great commuter cases. Even with my SH48 and a tail bag, things are often pretty tight and I run out of space on occasion.
I measured it at roughly 7 3/4 inches (19.685 centimeters). My handlebars stick out a little further than the cases. I have pro taper adventure bars but I laid the stock handle bar on the back seat and the cases were only a few inches wider. This was without the hand guards of course so, when you add those even the stock bars would be slightly wider than the cases.