Sebring bumps are undulations, not cracks and holes. Even if it would be, the mesh resolution is not great enough for those features. Nordschleife bumpyness is lesser than Sebring for sure. Unless you are choping kerbs. Of course Nords has more intense speeds and compression zones, elevation changes in general. You can also adjust setup to modify steering forces. Caster, rideheights, toe, camber, springs, dampers, downforce levels, fuel load, tire pressure.