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Which quantity does the centre of gravity height affect besides rollover?

  • A.The maximum speed of the vehicle, which depends upon the aerodynamic drag and the power available at the wheels
  • B.The fuel consumption
  • C.The steering ratio, which determines how many turns of the wheel are required between the two extremes of lock
  • D.Longitudinal load transfer under braking and acceleration

Answer: D

Load transfer forward under braking and rearward under acceleration is proportional to the centre of gravity height divided by the wheelbase, so a low centre of gravity keeps the loading more even. This affects braking performance and traction as well as roll. Lowering the centre of gravity is therefore one of the most generally beneficial changes a chassis engineer can make. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision.

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