7′ 0″ diam., 22 oval spokes, slightly humped rectangular inner rim, apparent tread 4½″.
Hub 19″ face dia., 2½″ above the tyre, pin in line at 13″.

Source: measured direct from the preserved loco at York.

Castings: 70.0 tread diam., 62.3 i/d., hub 2.1 mm out from the tyre. (Make the tyre level with the weights.)
Pin at 10.83 mm.

Casting prices and stock . MR loco sets, price list

Scan of castings in sets for 4-4-0 MR early Compound . MR 4-4-0 later Compound