Here are just a couple of examples of people discussing this "rule" prior to this thread:
http://www.bikeforums.net/archive/in.../t-401088.html
s4one 03-26-08 04:30 AM
I'm to lazy to try and measrure my shoulders but just by comparing to the width of my handle bars I would say I have 44cm shoulders and 42 cm bars.
Just go by the suit size you wear, unless you never worn a suit.
http://www.velocipedesalon.com/forum...ize-32001.html
jamaris 03-11-13
handlebar width and suit jacket size
Just wondering if you notice any correlation of the suit size you wear (or would wear, if you wore a suit) to your handlebar width?
(and of course there is "no right answer" to this question).
I wear a 38 width suit generally, but generally settle on 40 (c-c) handlebars.
Thoughts?