I used to have Nankangs on my car, they must have been the cheapest tyres they could find that would pass compliance. They were terrible, absolutely no grip, dangerous in the wet (braking down a hill was nearly impossible without locking the fronts!) and very unpredictable. Without any warning they'd just let go, I had some sphincter-puckering moments catching sudden, violent back end slides with the Nankangs on. I put a decent set of tyres on and the difference was like night and day. The car no longer felt like it was trying to kill me