Hello,

Im another lost soul when it comes to bike fitting. Originally I went to this site to find my size:

http://www.ebicycles.com/bicycle-too....5&b=Calculate

This site said I should be a 56cm frame with a 170mm crank. I thought I was good until I went to purchase a bike and I posted on this forum to find out if the price was right. Someone responded and said that for my height and size I should be a 58cm bike, even a 60cm to be comfortable.

So I thought I was set on size. So I ended up finding a Motobecane I liked on BD and I was looking at their sizing charts and they says this:

47cm - 5'0" to 5'3"
50cm - 5'3" to 5'6"
52cm - 5'6 to 5'8"
54cm - 5'8" to 5'10"
56cm - 5'10" to 6'0"
58cm - 6'0" to 6'1"
60cm - 6'1" to 6'2"
62cm - 6'3" to 6'4"
64cm - 6'4" +

and the 58cm bike has a 175mm crank.

So this recommends that I get a 56cm bike and that a 58cm would be too big for me. I am completely lost on what to do, everytime I think I understand bike fitting, it changes.

I am 5' 10.5" and my leg length is 32.5". Are Motobecane bikes size different? What size should I look at as I am unable to try it out when ordering online? My assumption was I should get a 58cm, which would be slightly bigger than what the link and BD suggests, yet on par or slightly smaller than what a poster on here told me.

Thanks.