You don't say which Skyline, but the GTR with rear wheel steering is easily one of the best cornering machines.
It does anything you want it to, over or understeer, rip traction or stick to it, anywhere into, during, or exiting corners. It does take some getting used to, but do some time trials between it, a RUF RGT, and other cars of that level at the Complex String track, on Sim tires, and you'll see it's like a gecko on crack and steroids.