recomend the right frame size....

As I am sure you know different manufacturers use different geometries/measurements but I suspect a 56 may be a good fit for you. Try hitting your LBS for a couple of demos and see what feels best for you. 

Here's the unfortunate answer... you should be on a frame designated somewhere between 50 and 64 cm... yeah, I know, not too helpful, but still true.

Seriously, you cannot buy a frame based upon some body measurements only. These are only a part of the equation. Your riding style, terrain, length of rides needs to be take in consideration. Your flexibility and core strength changes completely the fit...

Yes, you can gamble and buy a bike without getting fitted, but unfortunately, the chance is that you'll buy an ill-fitting bike and you will be in pain and hate riding after just a short while. This means either or two things... you stop riding all together or you buy a new bike that fits... either way, you wasted a boat load of money. Getting fitted can save you money.

To the point of the 54 or 56 you pointed out in the post... each manufacturer measures the frames differently and the geometry changes from manufacturer to manufacturer... This means that a 54cm Cervelo, Cannondale and Colnago will be vastly different and nothing a like.

This user's post has been ignored.

Edited by abeck 2010-08-11 7:18 AM

Depends on the bike.

And be prepared to answer the question "Why is your current bike a bad fit." Legs too long? Too short? Torso too long? Too short? Not flexible enough? Is it something you can fix on your own--stem change, crank change, saddle swap, etc etc etc.?

Edited by mmrocker13 2010-08-11 8:39 AM

How? What's bad about it?



Then you're going to throw good money into a "might be right" pot and hope for the best, right?

I'm 5'10" with a 31" inseam and a 54 cm fits me great.

Like others have said it is hard to tell. Best advice is go out to your LBS and ride a couple around and see which feels the best! I'm 5'10" and my tri bike is 54cm but my road bike is a 52cm.