Originally Posted by
79pmooney
I'll mention that this fad isn't especially new. People were riding road bikes with Del Mondo tubular tires 50 years ago. (I never heard a number for the width for those or any other of the tubulars of those days but I can assure you Del Mondos were a big, fat tire.)
Ben
I've read estimates anywhere between 25mm and 30mm. Jan Heine measured the set they used in the BQ tire tests at 28mm. Based on some descriptions, I wish I could go back in time and try them for myself, but there are a lot of good tires available now, too.