The driver of a car is practicing handling his car under winter conditions in an empty parking lot. Because of the snow, the friction force between the car's tires and the ground is at most equal to 45% of the normal force mg (i. e. μS = 0.45). When the 1700 kg car is going 8 m/s, and the driver tries to execute a tight turn, what is the tightest radius the car's tires can cause the car to execute? r = m.