Maybe it is the Hankooks?
I switched to Michelin Pilot Super Sport (non-run-flat) this spring and my car corners much better than with the stock tires, dry and especially on wet pavement. Even the traction control comes on less (car has Dinan stage 2 software as well). And, as you know, the ride is WAY better.
Dealer keeps calling me to ask if I am going to buy a new 3 ragther than buy out my lease in October. I told him I am never buying another car with run-flat tires, period.