Automotive trade experienced gasoline scarcity in the late 1970 and as an effect, the industry tried to produce vehicles that are excellent in fuel economy. To answer the demands of the consumers and to cooperate with the government regulation, the Ford made a decision to launch a new, dense sport utility vehicle, the Bronco II. Since the Ford Bronco II's body was too narrow for its height, it became the instigator of roll over trouble for Ford. It was dubbed as the "True Rollover King in the USA".

 

The vehicle's tendency to roll over is brought about by its sensitivity to steering inputs and the quantity of understeer or oversteer the car made. Bronco II becomes an understeer vehicle when it is set with a front stabilizer and it becomes an oversteer vehicle when it reaches its cornering limit. With the aim of increasing the amount of understeer, Ford put in a front stabilizer bar to the Bronco so that its roll rigidity will augment. Subjective tests proceeded to evaluate the bar.

 

Another difficulty that Ford Bronco II faced was the problem of "jacking" that occurs when the lateral forces on the tire tend to push the axle up. Jacking has two effects: first, the tires have the tendency to move inward beneath the vehicle, making it narrower, and second, the front of the vehicle moves up, causing it to become taller. This jacking problem is linked with the twin I-beam suspension. Six years after the production of Bronco II started, superficial changes were adapted in order to enhance the stability of Ford Bronco II. These alterations involved adding weight below the center of gravity, increasing sealant to the tires, and replacing the wheels.