It transforms the car - IMHO.
My old car was a 2.5si sport - so essentially the same in terms of body/suspension setup etc
My old car still had the runflats on and was on std suspension
This car is on falkens all round and is, as you noticed, lowered 30mm (springs i dont know)
So either its just the tires or a combo of that and th springs - but the ride is how i only can described "planted" and "solid" yet not rock hard.
If DEFO better than my old car - so thats the runflats for ya!
Ive given it a good run now and had zero issues going over speed humps or parking i.e. catching the front bumper (but im always cautions about that!)
Hope that helps
Jamie