What is the consequence of accelerating or braking on bends?

When a driver accelerates or brakes while navigating a bend, the primary consequence is a reduction in tire grip for steering. This happens because the forces acting on the vehicle change when speed is altered. During a bend, the tires are already subjected to lateral forces as they try to maintain a curved path.

If acceleration occurs, weight transfers to the rear of the vehicle, reducing the weight on the front tires, which are responsible for steering. This weight shift can lead to decreased grip and might result in understeer, where the vehicle does not turn as sharply as intended.

Conversely, if braking is applied mid-bend, weight shifts forward, which can also affect tire grip. While the front tires may gain grip momentarily due to the increased load, the rear tires can lose grip, and this discrepancy may cause oversteer or instability.

In summary, both actions of accelerating or braking disrupt the balance of the vehicle on a bend, leading to less tire grip for steering, making it harder to control the vehicle safely. Understanding this principle is crucial for maintaining control during cornering situations, which is vital for effective driving.