I'm curious as to how people claim to have their mini's so low, and drive them like it. I lowered mine so that it looked just right, about 1 fingers clearance between the arch and the tyre, and it was undriveable, even on the flat. That is with new hilo's, cones and suspension components, GAZ adjustable lowered shocks set to 10 clicks at the front and 8 at the back. It looked cool but was utterly useless. It's now about 4 fingers all round, looks a bit too high but at least I can drive it and have people in the back without worrying about wrecking my tyres or arches!
What exactly do you mean by undrivable? also i think there are a lot of variables ie wheel/trye size, brand of suspension componants and weight of the car to name a few oh and not forgetting repairs that may have taken place at some time in the cars life.
A "fingers" gap on one car can differ to the next even if all the other componants are set up ajusted exactly the same.