What occurs when spinning the wheels concerning friction?

When wheels are spun, the interaction between the tire and road surface changes in such a way that it can reduce the effective friction. This is primarily because spinning wheels can lead to what's referred to as "slipping" or "skidding." When a tire spins freely without sufficient grip on the surface, it experiences less resistance against the ground. As a result, the friction that would normally be present when the tire is rolling normally is diminished.

Friction is crucial for controlling movement, as it allows vehicles to accelerate, decelerate, and change direction. When the wheels are revolving at a high speed without sufficient traction, the tires may not be able to harness the friction necessary for effective control, which can lead to loss of traction, especially in conditions like wet or icy roads. This reduced friction is also why proper tire maintenance and understanding road conditions are so important for vehicle safety and operation.