6′ 9″ diam., 20 oval spokes, rectangular inner rim, apparent tread 4″.
Hub 19½″ face dia., 2½″ out from the tyre, pin in line at 11″.

Source: works drawing.

Castings: 67.5 mm tread dia., 60.8 i/d, hub 2.1 mm out from the tyre, pin at 9.2 mm.

Casting prices and stock . MR loco sets, price list

Scan of castings in a set for a LMS 4-4-0 2P . MR 4-4-0 840 class . MR 4-4-0 2606 class