38G's
my bad.
Not much vertical "G" (there is down force created by the car's little wing) but more lateral "G" instead.
Would have to have the car's weight and speed in the turn before calculation of "G" etc etc.
As I couldn't see any banking on the curves, I would presume "no bank" to add to the "G" calculation.
The amount of acceleration (Feet per second) is equal to the velocity of the car squared divided by the radius of the turn.
Banking a turn allows some of the G-forces created in the turn to increase the weight on the tires, increasing the traction. To figure out what portion of the Gs gets adds weight to the tires, you multiply the G-forces by the sine of the banking degree.