Originally Posted by
freeranger
As stated by cyccommute, the bike is only too big if when standing over the top tube, with feel flat on the ground, your tender parts hit the top tube. If standing flat footed, and have some clearance (a couple of inches would be good), then the bike is not too big. Are you hitting the top tube when standing over it, with feet flat on the ground? Still wondering what leads you to think it's too big for you.
That’s for a road bike. For a mountain bike, the tender bits need to be a bit further away since the ground is often further away if you have to bail off.