3′ 9½″, 12 oval spokes, rectangular inner rim, apparent tread 3″ - later 3′ 10½″ diam. with thicker tyres.
Hub 11″ face dia., ½″ out from the tyre.

Casting: 38.3 mm tread dia., 33.5 mm i/d., hub 0.4 mm out from the tyre.

Casting prices and stock . MR loco sets, price list

Scan of a casting in a set for a MR 4-2-2 115 class . MR 4-2-2 2601 class