There have been several threads on "bike fit" during the past month that included links to several web sites with bike fitting charts. Run a search for "bike fit" or "Moulton" to find those threads.

Bike fit is also a matter of personal taste. I like to sit more upright, with a good view of the motorists around me, who are intent on running me down. A size 59 or so lets me do that. But, if I wanted to join the"pretend racer" crowd, with my nose down against the front wheel, I would be better off around a size 55.

In the 1960's, the average adult male was about YOUR size, and size 23 (59mm) bikes probably outsold all other sizes combined. It was the "fashion" then to ride the biggest bike you could stand over without the top bar pressing into your crotch. Because of the prevailing "fashion", many riders were on bikes that were too large.

Today's fashion is pretending to be Lance Armstrong, riding slowly over to Starbucks on a tiny frame with the bars four inches lower than the saddle, nose down on the stem. For every guy with a license to race bikes, there are ten guys buying too small racing bikes to LOOK like the guys who race bikes. If you don't race, a "racing fit" is not the most comfortable or useful way to fit a bike.

Take your time go buy a bike that actually fits you and your style of riding. Don't be swayed by what other people do or say - the majority of people on road bikes are riding the wrong size.