I'm running BFG Comp T/As - 255/45/17 on the rear. They hook great. Maybe the Vette Brakes fiberglass springs help as well. I have a fairly stout 400 SB and when I get on it hard the tires both spin, the car drifts to the side a bit and then the tires just start hooking up real nice.
Of course, I don't dump the clutch at 5000 rpm or take it to the drag strip.