Tl* the contact owns a 2011 toyota scion tc equipped with toyo proxes st ii tires, size p225/45/18. the contact stated that while changing lanes at approximately 55 mph, he drove over a reflector in the road and the front passenger tire blewout. the vehicle was maneuvered to the shoulder and a spare tire was installed as a replacement. the vehicle was taken to an authorized dealer and they were unable to diagnose the failure. the manufacturer was made aware of the failure, but offered no assistance. the failure mileage was 1,700.