Hard
No point using SS now in races with leagues that have no refuelling. About 8 tenths quicker in qualifying but race pace softs are just as quick in the early laps. Really need to look at the race pace of SS
it dipends by circuit. in some circuits SS are very good, while in other they are really not good... i think it is not necessary any improvements. improvements are necessary for Wet tyre... they are "highlander" ;-)