3′ 6″ and 3′ 6½″ diam., 10 oval spokes, low rect inner rim, apparent tread 4¾″.
Hub 11″ face dia., level with the tyre (or planed 1″ below the tyre in LTSR Thundersley carrying wheel).
Sources: various preserved locos and tenders measured direct including the MR Compound bogies at York.
Casting: 35.0 tread diam., 27.5 i/d., hub level with tyre (or 0.8 mm below it).
27 Mar 2013