What is the primary effect of over steering at higher speeds?

Oversteering at higher speeds primarily leads to a higher likelihood of a skid because it involves the rear wheels losing grip before the front wheels. When a driver oversteers, they rotate the steering wheel too much or too quickly, causing the back of the vehicle to swing out. At higher speeds, this can be particularly dangerous, as it significantly reduces the tires' contact with the road, making it difficult to regain control. Skids can lead to a loss of vehicle control and potential accidents.

In contrast, increased vehicle stability, greater control in turns, and better fuel efficiency do not result from oversteering, particularly at elevated speeds. Stability and control typically improve with appropriate steering inputs, while oversteering compromises these aspects, leading to instability and potential danger on the road.