My car tends to go from neutral/slightly oversteer balance to understeer when the tires are overheating, as I am a front heavy FWD diesel, but for a RWD hard on the gas, it may be the other way around.
The only semislicks I have tried were the
Federal FZ-201 medium (225/45/17 on 7.5 and 8 inch rims).
Grip -> They offer very good and constant levels of grip from 15C going up. They wont kill you on cold or damp tracks (like Nordschleife mornings) but I don't recommend to push them under those conditions, nor would I use them for daily driving (they are very loud also). I tailed quite a number of cars with various semislicks and I have never felt limited by tires. On the contrary, I feel that they have very good heat resistance, better than the Dirreza D03G for example, which were slightly better from cold (tested on the Hring with Rex, for 6 continuous laps).
Lifetime -> The ones I had on the rear are still 1 trackday away from pension, after around 130 laps on Hungaroring, 50 laps on Nordschleife and 80 laps on a 3.3km Romanian track (the last 30 laps on the RO track mounted on the front axle). Obviously, I'm very happy with the lifetime. They do develop some cracks on the rolling surface (perpendicular on the sidewall), but they have no effect whatsoever in any aspect.
Other -> They have a very strong sidewall and offer good steering response and rear stability. I found them to work better in the 2.3-2.5bar range and not lower. I will even try more. Considering also the price, even though they are a lot more expensive than 3 years ago, they would still be my track choice right now.
