I have these tires on my car last six months. When they were brand new the grip was great, I also did two track days with them, although with just a couple of quick laps at both of them. Grip levels and handling are very good while driving on the track, but nowhere close to that on public roads now after six months and 10 000 km I have driven on them. Front wheels are spinning in second gear at full throttle on some occassions when the tarmac is not so sticky (which didn't happen on my old and worn PremiumContact 6 so much), it feels like it's already worn out while it isn't, and now in autumn it feels like driving on ice when rain falls down. They feel plastic. Tire reviews tested them on the track with two other brands, and while the Michelin PS4S and Goodyear Eagle F1 SS lost about 5 and 4 percent of its original thread, Potenza Sport lost 40% of it. I definitely won't buy them again. If I don't want a compromise (like now because only situation when I have grip is on the track), then I will consider buying semi slicks instead.