Tire Sidewall problems of the 1999 Ford Windstar

While driving at 40 mph front right tire had sidewall separation which caused a tire blowout. Dealer has been notified. Tire size 32560r16.

At freeway speed we heard a loud bang, and the vehicle lifted up suddenly in the rear, followed by a loud slapping sound. I was able to keep control and get to the side of the road. The tire tread had completely separated from the tire. There is no evidence of puncture marks or other damage to the tire. When we got this vehicle from the dealership, I noticed "bulges" in the sidewalls of these tires and asked the dealer and was told this was normal. General should be forced to recall all these tires. Many were put on Windstar minivans and this was a very violent separation that could have resulted in a major accident if someone with less experience was driving, or road conditions were wet or slippery! (dot number: a3m3 tiresize: p215/70r15).