6′ 9″ diam., 20 oval spokes, distinctly ridged inner rim, apparent tread 4½″.
Hub 19¼″ face dia., 2″ out from the tyre. Pin between at 13″.

Sources: Johnson, Locomotives of the Great Central Railway, vol. 2, p. 145, reduced works drgs., and photos.

Castings: 64.3 mm tread dia., 57.0 mm i/d., hub 1.6 mm out from the tyre, pin at 10.3 mm.

Casting prices and stock . GC loco sets, price list

Scan of a casting in sets for a GC 4-6-0 9P/LNER B3