My S3 rides much better with tyre pressures reduced to 23 psi and tyres never get too warm.
Steering feels much better than when on original Avon tyres. Now on the Avon ZZ5 all round. Highly recommended.
Steering also benefitted greatly from suspension being properly setup. My car's handling as originally supplied was inconsistent and the car oversteered quite easily. Not any more. Grip is excellent.
Even cars from good dealers seem to have suspension setup badly.
I still think a good S3 is the best Aero all round. (But then I would, wouldn't I?)