Standard fitment was a 450-18 crossply tyre.
The Nine was offered as an economy model, and was a sort-of replaement for the Junior. It survived well, even returning after the war as a roadster. Available as a roadster, saloon or even a van! After placing well at Le Mans in 1933, it was used as a model name for the tuned version, and the basis for more extreme race offerings.