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Discussion Starter #1
When i went to bike shop, the guy from shop told me 5'8 should ride 54cm bike. But i tried my friend's bike, have below comment:
cannondal carbon 6 -50cm too small
specialized tarmac -52cm with high seat post, size fit but not speedy
Kestrel RT-800 -53cm, feel little too big, but speedy

can any one give me some idea, thanks
 

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speedfan
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53 Posts
Size

You should find a good local shop with a person who can fit you. I tried the random, much better fit after i got help. Is this your first bike? Whichever bike it is, good luck and enjoy.
 

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a good start

That's not a bad starting place, but a good local bike shop will use a combo of this baseline measurement, how the bike 'feels' to you on test rides (which they should allow), a professional fitting, etc... There are many variables that affect the fit (long or short legs, torso, arms etc... for your overall height), all of which a good LBS will take into account. Sounds like you already have a good start with riding different frames and getting an idea of what feels right and what doesn't. Picking a bike isn't a snap decision. Analyze and enjoy the process and ultimately when you settle on one, you'll be a happier cyclist for it.
 

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Lots and lots of variables you need to consider if you are looking for ideal fit. A size 54 between bike makers could be very different when it comes geometry and lengths. Research proper fitting online. There is a ton of good info available. For new riders the one criteria I wouldn't put a lot of weight on is "how is feels." A new rider has no idea how a properly fitted bike should feel. How a properly sized and fitted bike feels initially will change as you become more fit and accustomed to the cycling position.
 

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There are too many body type variations to not go with a fitting, especially for a road bike, as you're more apt to spend a lot of time pedaling that thing!

I'm 5'9, and I have shorter legs and a longer torso, my standover height is under 30", on a Specialized Secteur I felt better on a 50 cm as compared to the 52, but that was just around the parking lot. Meanwhile I know people shorter than me with longer legs.
 

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greenhorn
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5'7" here and a 48cm fits me perfect. But everyone's legs are different. But don't buy one that doesn't feel right, you will never be comfortable.
 

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Yup, you're only about an inch taller than me, but I'm thinking of a 50. Maybe I need a Nut Bra to increase my standover height!
 
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