[GTP Dad]

If the tire came off and the brake rotor hit the ground then there is probably damage to both the rotor and the ABS sensor. Both will need to be replaced. The shock of the car hitting the ground is what damaged the sensor. Usually there are only a couple of things that will cause a tire to come off a car. Extremely bad wheel bearings that come apart but with new style bearings a very unlikely scenario. Lug nuts not tight and falling off but you should have noticed a vibration when the wheel was turned. Broken lug studs to where there are too few studs to hold the weight of the vehicle. The last thing is a blow out or very low tire pressure that seperates the tire from the rim and causes the tire to fall off. If you find that this was a lug nut issue then make sure they are properly torqued when they are reinstalled.