One problem related to tire bead has been reported for the 1999 Ford Explorer. The most recently reported issues are listed below.
While driving on the highway at 70 mph my husband noticed our 1999 Ford Explorer not driving right. He pulled onto a side road to take the scenic route home. He was going 50 mph, with our 3 year old in the car, and the sidewall blew completely off the tire. The entire sidewall separated from the tread and bead. Thank goodness it was the back passenger tire that blew otherwise the outcome would have been different. As it was nobody was hurt. He could barely control the SUV as it was. The tire has only barely 6000 miles on it. When we called the store where it was purchased they said even though we paid for the road hazard we still had to pay for a new tire.