Simplify the following text for a Grade 7 native English-speaking person.
Original: An abnormally high failure rate in Firestone 's Wilderness AT , Firestone ATX , and ATX II tires resulted in multiple lawsuits , as well as an eventual mandatory recall .
Simplified: There was a very high failure rate in Firestone 's Wilderness AT , Firestone ATX , and ATX II tires . Several lawsuits were filed .