Aside from the obvious discomfort of feeling the suspension arm colliding with the subframe on every bump, it would seem a touch dangerous for the sake or tightening the arch gap.
As previously mentioned the way to really slamming the ass of the mini seems to lay in moving the subframe up rather than dropping the suspension down. In this way you retain normal travel and geometry while getting a pleasing scrape from the camber in the road
Kappa, the external radius of 10 vs 13 is negligible. It's the ratio of tyre : wheel that alters the perception.















