Complex sentence: Firestone hired a consulting engineer to analyze the performance of the Ford Explorer and other SUV's during a tread separation, this report showed that the Explorer had a greater tendency to oversteer following a tread separation than other SUV's.
Split into simpler sentences: Firestone hired a consulting engineer to analyze the performance of the Ford Explorer and other SUV's during a tread separation. This report showed that the Explorer had a greater tendency to oversteer following a tread separation than other SUV's.