Rear Axle Spindle problems of the 2015 Chevrolet Camaro

I was driving at about 20 mph around a traffic circle in a residential area, when, after turning right, then left, then right around the traffic circle, the back end slid out and the right rear wheel slammed sideways against a curb. The wheel was instantly cracked, the wheel and spindle bent. "service stabilitrack" instantly came on the driver information center, and all three stability indicator lights came on. The p-zero nero tires on this car are not suitable for wet roads in the city. The ambient temperature was about 50 degrees. The Camaro and these tires make it unsafe, and the car should come equipped default with all-season tires, not racing z-rated summer only tires. Repair cost is $1,500 and this is not covered under warranty. I am very unhappy with the performance of this "performance" car.