These tires (in the runflat flavour) were fitted by the dealership as an option.
Grip wise, the electric torque really makes these tyres struggle, I often find myself having to really be careful about how hard I go on the throttle if I want to be nippy in a junction, as the ESP is also quite trigger happy when not in Sport mode. After that initial couple of feet, however, they have enough grip to accelerate and break without issues.
In the wet, the car skids in roundabouts at speeds as low as 20mph. The tires struggle to put the power down, again most likely due to the electric torque.
They are quite noisy and (at least the runflat kind) on the stiffer side, so they really contribute to the road feel (in the sense that you'll definitely feel every bump you go over). Otherwise, road feedback is on the average side.
After only 8000 miles, the tread seems to be nearing the end of its life. While some sporty driving had happened, it was nowhere near enough to justify the tread being as low as it is.
Overall, I am not happy with the way they perform and if I could go back in time I definitely wouldn't get them on my car.