4′ 1″ diam., 10 oval spokes, inner rim has a low hump shape, apparent tread 5½″, tyre width 5½″.
or 4′ 0″ diam., with an apparent tread of 5″.
Hub 10½″ dia., face level with the tyre.

Source: tender with the preserved Y14/J15 at Weybourne measured direct in September 1994.

Casting: 38.9 mm tread dia., 30.1 i/d., hub level with the tyre.
Tyre widths for exact scale models at 1:32, 5½″ = 4.37 mm.

Scan of a casting in a set for a GER 4-6-0 S69