In the chase scene which precedes the scene in the parking garage, watch closely as the car driven by Reese makes a sharp, skidding right turn onto the access ramp to the parking garage: The car appears to lose one of its tires, which continues rolling down the street. You may need to use slo-mo to catch this.
After submitting this, I was told that this is actually a hubcap. Since it's out-of-focus and appears on-screen for maybe one second, it's very difficult to tell for sure. What do YOU think?