3′ 8″ diam., 10 oval spokes, apparent tread 4¾″, tyre thickness 5⅜″.
Hub, 12½″ face dia., ¾″ out from the tyre.

Sources: No 4472 measured direct at Llangollen in Feb. 1995.
O.S. Noch, British Locomotives of the 20th Century, vol 1: page 218. Detailed works drawing.

Casting: 34.9 mm tread dia., 27.3 mm i/d., hub 0.6 mm out from the tyre.
Tyre thickness for exact scale modellers: 5⅜″ at 1:32 = 4.3 mm.

Casting prices and stock . GN loco sets, price list . LNER loco sets, price list . MR loco sets, price list

Scan of a casting in sets for GN 4-4-2 . LNER Gresley A1/A3 . Thompson A2/1, 6 wheel tender
Thompson A2/1, 8 wheel tender . P2 . V2 . MR 4-2-2 2601 class