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I got my eyes on this Raleigh:
Yes it's a little expensive but I like the blue and white frame.
Am 5'11", is this going to be a good fit for me?
The seller said its frame size is 60cm measured from bottom bracket to top of seat tube.
Am a little confused because I was told a while back that measurement isn't necessarily the frame size. Is this true?
It's not impossible, but once you add the crank length and the height of the seat post bracket and saddle, I'd say it's unlikely unless your legs are long for your height. You certainly won't have much room for adjustment.
Without a test ride, this would seem like a bad idea.
There are some differences between modern and 'classic' bike sizing, but a quick google search says no, it's too big for you.
https://www.google.com/search?q=bicycle+frame+sizing&tbm=isch
What you were told is true, the seat tube length measurement is not an exact size. There is variation between manufacturers. It was a good method to size bicycle frames when all bikes had a horizontal top tube and similar geometry. It's a very poor way to size modern bicycles that come in many styles and frame geometries, hence the move to 'stack and reach' sizing.
BTW, the consensus on this site is that one really needs to test ride a bike to know if it fits.
