3′ 6″ diam., 12 rectangular spokes, rectangular inner rim, apparent tread 4″.

Sources: various early photographs and drawings.

Casting: 33.3 mm. tread diam., 27.0 mm i/d., hub 0.9 mm out from the tyre.

Casting prices and stock . S. & D. loco sets, price list

Scan of a casting in a set for a S and D 2-4-0