As the vehicle brakes, the forward motion of the vehicle is resisted by the friction between the tires and the road surface. This causes the vehicle's weight to shift forward. The front suspension compresses and the rear suspension extends. This weight transfer results in a reduction of the normal force on the rear tires, which reduces their grip on the road surface.
As the rear tires lose grip, they are more likely to skid. This can be dangerous, as it can cause the vehicle to lose control.
The amount of weight transfer depends on a number of factors, including the vehicle's speed, braking force, and weight distribution. Vehicles with a higher center of gravity are more likely to experience a greater amount of weight transfer than vehicles with a lower center of gravity.
To avoid wheel skids, it is important to brake smoothly and gradually. This will help to reduce the amount of weight transfer and keep the rear tires gripping the road surface.
