B/E stands for beaded-edge tyre. This type uses a heavy rubber bead . There is no internal wire, which distinguishes it from a wired-on (W/O) tyre. The heavy bead tucks into a indention on the inside of the rim's sidwall, caused by a rolled lip. They are also known as clincher tyres but that term is often used for both B/E and W/O, to distinguish them from tubulars.

The B/E survived for a surprisingly long time after the introduction of the W/O, in some portions of the world. Asia appears to have been one of these areas. The Japanese seemed to favour a version with flaps extending inwards from the beads. The flaps overlapped each other, completing encasing the tube.

Aftermarket replacement B/E rims and B/E tyres continued to be offered into the 1980s. Araya offered a B/E rim as late as 1984. I imagine that some tyre manufacturers, such IRC, continued to offer B/E tyres at least this long. There may be some specialty manufacturer that continues to offer them, but I'm not aware of any.