I hit a rut that crossed the road thanks to a utility company that took the steel plate off the road. It was maybe a foot wide and 10" deep. I was doing about 25-30 mph. After I got to work I checked the tires, wheels and underbody for damage and didn't see anything. It's been a couple of days and still all feels fine. I was impressed. I have the 18" wheels and low profile tires and thought for sure I may have cracked one.