I had a baby blue Schwinn Super Sport that I used as a commuter. Wheels were 27 x 1 1/4 and there was plenty of clearance for mudguards. I enjoyed riding that bike and I never worried about locking it up - it looks just like a Varsity or Continental at first glance and, since the drivetrain is the same, it is unlikely to get stolen for its components.
But even though the frame (at least the three main tubes, I don't know about the others) is chrome-moly, don't kid yourself, this is not a lightweight bicycle.
Sorry about the poor quality of the photo, it's a scan of a small print from the days of Kodachrome.
