My Panaracer Pasela's 27" x 1" came today. Look like a decent tire. Mounting them was pretty straight-forward w/o complication. What I did notice was that they looked slightly lagrer compared to what I had on there previously (27 x 1 Specialized Touring II's). So I went about measuring them.

The Pasela's were just over 24mm wide, while the old Touring II's (also 27x1) measured out at 21mm. The Panaracer 27x1 looked more like a 23C in width. I'd think the 2 other sized Pasela's (1/8" & 1/4") available, might be OK for some, but way wider/bigger than I would want...ymmv?