LSD 5/5/5 (I tried 60/60/60, seemed a tad easier to steer) , downforce to all minimums, ABS @0, all aids off, tinker with final gear at around 502 KM/h, oil change, stiffen springs to full, dampers to stiff, slipstream at 492km/hr, no slipstream on lap 3-5 @ 479 km/hr. best lap on indy 500 @ 30.55s avg 30.99
all this with racing hards, I might shafe off a tenth on softs.