Tire Blowout problems of the 2013 Ford Escape

I was driving on ih 10 in san antonio going approximately 65 miles per hour in my 2013 Ford Escape that I have had for just over a year. I have approximately 19,500 miles on these tires. My rear passenger tire blew out (literally the tread blew right off the sidewall) and ripped the plastic skirting off my passenger side of my car. We changed to the spare and took the car to the dealership where I was told my continental contiprocontact tire would be sent back to continental to determine if it was covered under warranty- after reading the multiple complaints, we will now be changing all 4 of our tires (this is after spending about $175 yesterday on a new continental so that we could attempt to file a warranty claim). The tire in question is continental conti pro contact 235/55r 17. At this point, the best that we can hope for is that they will give us "up to 62% reimbursement" per the dealer because of my mileage, regardless of the fact that there was plenty of tread depth left on the tire and I had not puntured it or run over anything other than roadway.