3′ 9″ diam., disc. 4½″ apparent tread.
Hub 12½″ face dia., 1″ out from the tyre.

Source: B1 tender measured direct at Loughborough in 1995.

Casting: 35.7 mm tread dia., 28.3 i/d. Hub 0.8 mm out from the tyre.

Casting prices and stock . LNER loco sets, price list

Scans of a casting in sets for LNER Thompson A2/1, 6 wheel tender . V2