Heck broken out

The car has 225/45 tyres on 16 inch rims and lowering springs. The driving behaviour is quite restless, especially with track grooves and bumps. Before that the tail broke out: it rained and I drove in a very sharp right turn, in front of me were two cars, which are quite normal and without problems, we had a slow speed, so close to 50 km/h, wi d drive around this turn, towards the end of the turn suddenly the tail goes away and I had great trouble to catch the car again, also came to the opposite lane, fortunately no oncoming traffic. The other cars are there quite normal without problems, there was nothing on the road and the speed was adapted to the track. What the hell was that? On the tires are good 2 bar on it (stands on the sticker at the front door, which you should make 2 bar on the tires, the tires have What can this be about?