2′ 11″ (= 900 mm) diam., 8 oval spokes, rectangular inner rim, apparent tread 85 mm (= 3.34″).
Hub 250 mm dia., 9.2 mm below the tyre.

Source: No 230 measured direct at the Nene Valley Railway in 2002.

Casting: 28.1 mm tread dia., 22.9 mm i/d., hub 0.3 mm below the tyre.

Casting prices and stock . France, loco sets, price list

Scan of a casting in a set for a Nord 4-6-0 3500 class