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[Closed] How to size a road bike?

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[#1813967]

I'm 6'4 and would like to know roughly what size i should be looking at.
rode a friends 56cm frame yesterday which felt fine but drop bars felt too low (when in 'racing position).
Hope i don't need to buy a garden gate as i hate big looking bikes.
will a 58cm suffice? Obviously I will try for size before i buy.


 
Posted : 19/07/2010 2:30 pm
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nah you indeed want a 60cm minimum id say, if you dont like the look of the big bikes, get a compact frame, mine looks tiny!


 
Posted : 19/07/2010 2:36 pm
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How will I know if it's a compact and who makes them? Sorry for dumb question but I'm a newbie!


 
Posted : 19/07/2010 3:44 pm
 flip
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Only way to tell is to try some out at a shop, road bike sizing is more critical because of the time spent in the same position ๐Ÿ˜‰

The new 'sportive' end of the market is probably what you're after as they usually have longer head tubes so raise the handlebars. You can acheive the same effect on a standard race bike but it looks silly with lots of spacers.


 
Posted : 19/07/2010 4:16 pm
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I was always led to believe you needed 9 inches less than inside leg measurement. Not sure if that is correct though


 
Posted : 19/07/2010 4:20 pm
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Which leg?
The only way is to go to a shop and get fitted/try some out.
I imagine 56 would be far too small for you.


 
Posted : 19/07/2010 4:53 pm
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I'm 5'11 and got a 56 from my LBS the 58 didn't feel right, however when I went to a new shop owned by a mate he spent an hour setting up my riding position and said he would of recommended a 58 also got the same opinion from a Specialized Concept Store.


 
Posted : 19/07/2010 5:51 pm
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any where from a 60 to a 66 depending on leg length and arm length you really need to try them out though


 
Posted : 19/07/2010 5:54 pm
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Decide what you want the bike for - racing, sportives, touring etc. Get a bike fit! Try several bikes for size. Take as many as possible for test rides.

The following has some useful guidance:
http://www.competitivecyclist.com/za/CCY?PAGE=FIT_CALCULATOR_INTRO


 
Posted : 19/07/2010 6:01 pm
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I'm 6'3" and have ridden everything from a 58cm to a 62cm. Current bike is a 61cm but that's a compact frame. Just goes to show how sizes vary between brands. Traditional frames (ie horizontal top tube) are relatively rare these days, most companies go for compact or semi-compact geometry.

It's not the seat-tube length that's the issue particularly, more the top tube and hence the reach.

The only way to find out is to go to a decent roadie shop and try a few. I'd be guessing you need a 60cm minimum and you might find those hard to come by in bike shops, maybe try a shop with a bike-fitting/measuring jig.


 
Posted : 19/07/2010 6:58 pm