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).

Casting prices and stock . Prices of sets: MR . LNER . LTSR

Scan of a casting in a set for MR 4-4-0 840 class . MR 4-4-0 2606 class . MR 4-4-0 Compound
MR 4-4-0 later Compound . LNER 4-6-2 A3