[QUOTE=sayemthree;3247979]the top times , ACR and GT3 are on PSC rubber. I think even the GTR tires are aan almost R-comp tire. I am thinking the M3 could break into the 1.39's on R rubber? ]
I think PS2s are probably close to as sticky as PSCs (which are not that sticky for an R-compound). I'd guess that a switch from PS2s to PSCs would be worth 2 seconds at the most. And if you went to something stickier (R6 or similar) then you would be seriously taxing the suspension (not a high enough spring rate/dampening or enough camber) so just bolting them on may not be worth as much as you might think. Still, 1:39.9 is only 3 seconds away . . .
Anyone want to volunteer to try for the '39s?!
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