And i can tell you from experience (real-life) than Nissan Skylines do not understeer at speed, and actually turn quite well.
Near a sharp corner outside of Dad's town, i was going about 120-140km/h and didn't know how sharp the corner was until Dad told me, so i braked a little (had no time to brake fully, as the corner was right in front of me) so i just turned in expecting to go over the centre line, but surprisingly it turned like it was on rails and never even felt like it was going to cross over into the other lane.
And at Christmas when he was down here, we were chasing a 'boy racer' up a hill near this town, and at a hairpin bend he got the car slightly sideways. But that may have been because the front wheel got hooked up on the edge of the road.
If you are wondering, it's a four-wheel drive, 250hp, automatic transmission, four-doored Nissan Skyline GTS-4 (R32), and many refer to it as the mini godzilla. As it is as close as you will get to a GT-R.
It uses the same engine as the GTS-t in Gran Turismo 3, but is faster and easier to control than that one.