5′ 2″ diam., 16 oval spokes, rectangular inner rim, 5¾″ tyre width, 4¼″ apparent tread.
Hub 14″ face dia., 1⅜″ out from the tyre, pin between at 10″.

Source: works drawings for the 1400 class, lots 279, 287 and 288.

Casting: 51.7 mm tread dia., 44.8 mm i/d., hub 1.1 mm out from the tyre, pin at 8.3 mm.

Casting prices and stock . GWR loco sets, price list

Scan of a casting in a set for a GWR 0-6-0 22xx . 0-6-0PT 54xx . 0-4-2T 48xx