3′ 1″ diam., boxpok welded from plate, 3½″ apparent tread. Hub 12¼″ face dia, level with the tyre.
Source: Winston Churchill measured direct at York in August 1995.
Casting: 30.8 mm tread diam., 24.9 i/d., hub level with the tyre.
Scans of a casting in a set for SR 4-6-2 Bullied Pacifics
27 Mar 2013