6′ 6″ diam., 22 oval spokes, rectangular rim, apparent tread 4″.
Hub 19″ face dia., 3″ out from the tyre, pin between at 14″.

Casting: 61.9 mm tread dia., i/d 55.8 mm, hub 2.4 mm out from the tyre, pin at 11.1 mm.

Casting prices and stock . GWR loco sets, price list

Scan of a casting in a set for GWR 4-6-0 King