I'd add that I my shoulders measure 35 cm, and I run Deda 4 Girls bars on my bikes. These measure 38 cm outside to outside; 36 center to center. At one time, I was on the search for narrow bars and ran into a couple of problems. Few manufacturer make bars that narrow and those that do often run out of stock such that they're hard to find. I have used 40 cm bars before without difficulty; I just like the overall shape of the Dedas more.
ETA: I keep thinking of additional things to say. Based on my own experience and having read any number of threads on bars over the years, I'd add that there's more to bars than just width. Finding a bar with the right reach, drop, and ergonomics can be challenging. Sometimes you have to compromise on one thing to get what you want on another. So, for that reason, I'd give the current bars a chance and see what, if anything else, you like/don't like about them before ordering anything new.
Last edited by indysteel; 08-05-2011 at 11:39 AM.
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