there is a thread somewhere in the tech section about this....Renault do spend lots of time, but springs are not progressive and single rates, so nothing too high tech. THey spend time getting a good compramise, but increasing spring rate and lowering CoG a tad will only help........
Of course, within reason si the key, affecting dynamic geometry has more of an affect than dampers and springs.
Why dont we do a test, 1 driver, 2 cups one track day.........