This is my last review on these tires. I drove these tires quite a lot recently, had some trackdays and a roadtrip around some very nice mountain roads, with dry and wet weather aswell.
Tires are still performing very well, especially on dry weather. I had a trackday session at the local karting track (1.2 km total lap length), and I've absolutely tortured the front tires. I didn't manage the tire pressure prior so I had about 2.3 bars cold which was way too much, it was my first time on the track. Track was hot and ambient temperature was hot aswell.
On the karting track, the tires got way too hot, and felt very greasy after 2-3 laps, with non existent feedback, understeer and visible tire graining. I've also driven some laps on a proper car circuit and they behaved a lot better, as the tires didn't get as hot. When they are at the proper temperature, they have very good grip, and the feedback is quite good. My car is a Fiat Grande Punto T-Jet with over 180 hp and 300 N/m torque, without an LSD (which is understeer heaven).
On wet weather however, lateral grip is not great. Braking is very good, aquaplaning decent, but lateral grip it's not really great. I've tested this prior to going to the trackdays, so the tires were not grained in any way. The tires do not inspire confidence when turning in wet. They give the feeling that they'll snap out of traction very sudden. But this is if you push them, and try to drive them a bit faster in wet. If you're conservative, they are very good.
Sailun is the only chinese tire manufacturer from what I know, that's FIA certified and provided tires for F4 Chinese and TCR Asia. It seems that the motorsport R&D is put to very good use on the road tires. These are the absolute best budget UHP tires that you can get. If you're looking for a best bang for the buck, this is the tire for you.
For me personally, I would buy them again, for sure. The next set however it's going to be Kumho Ecsta Sport PS72, can't wait for Jon's review on those.