I have these on a few weeks now and i have to say im very very impressed with them,as far as i am concerned the surpass the F1 GSD3 in every aspect....
First thing i noticed was how much quieter the are esp on the motorway.
In the dry the are probably on a par with the old F1,but on a dry roundabout or turn the fair marginally better,the shoulder on these is massive,the old shoulder was a big shoulder and you could feel it in the corners,but these are a different league,it feels so solid in the bends.
In the wet is where these come into there own i haven't had much proper wet driving but tonight i got a good spin of decent wet road driving on the way back from mountmellick,these are a very assured tyre on a wet roundabout and are even better than the old F1 from a standing start on a wet road.
If there is any bad point its that the need maybe 5 mins of driving from a cold start to fully warm up,but then so does the car.it also must be noted that i never had a brand new set of F1s on this car so its hard to get a proper comparison.