Originally Posted by
Will Goes Boing
To give you an idea... I'm 5'10 with a 32" inseam and ride a 54cm. If anything you would be bordering on riding a 50cm, so if you have to "broaden" your range you should consider 50cm and 52cm bikes.
Back when I was 5'10 with a 32.5 inseam I also rode a 54 steel frame. These days I am down to 5'9" thanks to age and neck injuries but with a new sloping top tube framed bike I'm riding a "virtual" 57 cm. I'm pretty comfortable but when I get on a slightly smaller frame it has that "fits like a glove" feeling. As has been said there is a range of sizes you can fit but I'd look for the smallest frame that fits well.