As Figure 2 illustrates, a higher CG decreases tractor stability. In many normal working situations, ground terrain and mounted equipment combine to reduce the distance between the equipments CG and stability baselines. Saying this another way, each of these factors may cause the tractor's CG to go beyond the tractor's stability baseline and overturn. The CF increase is directly proportional to the turning angle of the tractor. The relationship between CF and tractor speed, however, is not directly proportional.
Centrifugal force varies in proportion to the square of the tractors speed.
Centrifugal force is often a factor in tractor side overturns. When the distance between the tractor's CG and side stability baseline is already reduced from being on a hillside, only a little CF force may be needed to push the tractor over. Centrifugal force is what usually pushes a tractor over when the tractor is driven too fast during a turn, or during road travel. During road travel rough roads may result in the tractors front tires bouncing and landing in a turned position. Over corr cting steering if the tractor starts to veer off the road is another example where CF is a factor in side overturns.