This happened last year on our way to the St Ignance car show. The tires were 4 years old. I was in construction when the tire blew. Concrete K barricades with no place to stop. I had to drive 4 miles before I was able to stop. The tire destroyed the fender, tore off the license plate, and the taillight. I bought the road hazard warranty. When I took the trailer in for tire repair they found a splitbelt on another tire, and a piece of rebar in a 3rd. Fast forward a month, the last tire shredded.