5′ 2″ diam., 16 rectangular spokes, rectangular inner rim, apparent tread 3½″.
Hub 14½″ face dia., 1¾″ out from the tyre, pin in line at 12″.

Casting: 51.7 mm tread dia., 46.4 i/d, hub 1.5 mm out from the tyre, pin at 10 mm.

Casting prices and stock . GWR loco sets, price list

Scan of a castings in a set for a GWR 2-4-0T, 0-4-2T 517 class