Tire Pressure Monitoring System problems of the 2003 Toyota Corolla

Our complaint is with a tire on our car. The tire is a mirada brand, sport gtx, size is 195/65r15. Dot number is 4un9 with date code 6ah5111. Tire is manufactured in the philippines. The car is a 2003 Toyota Corolla. Tire was mounted on right rear of car with nothing in car but driver and one(1) suitcase of clothes. Tire blew out the sidewall at approx. 70 mph on interstate hwy. 26 west of columbia, s. C. On 7/7/2014. Driver had been driving about 2. 5 hours, all on good dry and clean pavement, no obstacles were encountered to run over and damage tire in any way, and air pressure in tire was sufficient. Tires were purchased new and had at time of failure approx. 30k miles. Vehicle was driven rest of trip with spare installed, we have failed tire in our possession. We are concerned with any lack of oversight on tires and other safety related products manufactured outside of the u. S. As there have been reports of failures like this in the past that I am aware of. Tire sales people where I purchased the set on our car has said they are unable to purchase these tires any longer, so we had to acquire a different brand to replace the failed tire.