In the Medlen accident the Goodyear tires did play a pivotal role, and Goodyear’s engineers have publicly stated that something struck the inside sidewall of one of the tires, resulting in its failure. The question then becomes, “Where did the object come from that hit the tire, and what was it?”
It’s conceivable, but unlikely, that Medlen ran over something on the track with his front tires, which picked up that object, throwing it to the back of the car, where it struck the inside sidewall. More likely is that something came off the car and hit the tire, causing its failure.
What can’t be denied is how severely and dramatically Medlen’s chassis failed in his accident. Observers on the scene in Gainesville report his mechanics being visibly shaken and outspoken in their displeasure upon discovering how many places the car seemed to come apart in the accident.