On my R34 GTR, I paid for and had installed a stock set of bilstein B16 PSS9 coilovers (specifically for R34) part GM5-8075-MO
Unfortunately i don't like the ride much. Set to minimum damping - bouncy as hell (rear mainly). No surprise there.
But even on maximum damping, they are still "bouncy".
I can't speak for how well they handle, not having tracked them, but take the smoothest freeway surface you can imagine, but with the normal very gentle undulations. Now drive at 60 to 80kmh on it, and my head is bouncing off the back of the headrest, and the car has the jiggles, and I'm going up and down in the seat slightly. From outside you wouldn't tell, it isn't riding like a car with shot shocks, It just feels .. bouncy, on a small scale.
The resonance is worse with certain surfaces and speed ranges. Going faster is ok.
My experience so far has been S-tunes .. no bounce & Ohlin Flag-R .. harder, much more direct connected feel, but still less bounce than the PSS9
Is there a front-rear setting I should try?
Also, at very low speeds eg in carparks, they click clack a bit from the front you can provoke that noise with the steering. Everything is torqued down right - I am told.