You can slide in R3E, it depends on a car but at least small slides are possible in most of them. R3E has few generators of tire models and usually the older ones slide less. There is a difference in rF2, but who knows which is more realistic? In rF2 DLC GT cars slide too much and you could recover from most big slides, which wasn’t realistic. There wasn’t enough grip fall off in GT3 cars. It was too forgiving - at the opposite end of spectrum than iRacing in general. Not long time ago S397 made the GT3 cars a bit less forgiving so that past some point it’s hard to recover.