Hi all,

I am a mountain biker that has slowly been convinced to get a road bike by some of the guys I work with. I have some questions about frame size for a Bianchi C2C Via Nirone.

The fit calculator at Wrench Science gave be the numbers shown in the screen print. The sizing chart from the Bianchi web page is the other screen print. The frame geometry on the Bianchi web page shows the seat tube measurement as center to top.

Questions:

Wrench Science says the frame size center to top measurement for me is 54cm. The Bianchi chart shows a 54cm seat tube under the 57cm column. Am I correct that I need a 57cm frame? I played around with a couple of other fit calculators and I ended up with 55cm and 56cm recommendations.

Also, while searching around on this bike I find the following on the Jensen U.S.A. web page:

"this frame uses compact geometry with a sloping top tube. As a result, you should make your primary sizing decision based on the effective ("virtual") top tube measurement."

The Wrench Science page does not give me a top tube measurement, so I don't know what to make of that.

The more I look into this the more confused I am getting and I was not able to turn up much with the search function here, so I need to ask for help.

Would a 57cm frame be the best choice for me?

Also, what are your opinions of this bike / frame.

http://i57.photobucket.com/albums/g205/11b43p/Roadbikefit.jpg

http://i57.photobucket.com/albums/g205/11b43p/Sizechart.jpg