910 mm (2′ 11¾″) diam., 11 oval spokes, rectangular inner rim, apparent tread 65 mm.
Hub 333 mm face dia., level with the tyre.
Source: works drawing.
Castings: 20.2 mm tread dia., 17.3 i/d, hub level with the tyre.
Scans of a casting in a set for a Furka Overalp Bahn HG 3/4
2 June 2018