What is the primary consequence of losing contact with the road surface?

The primary consequence of losing contact with the road surface is an increased risk of hydroplaning. Hydroplaning occurs when a vehicle's tires lose contact with the road and instead ride on a thin layer of water. This phenomenon significantly reduces traction, making it challenging for the driver to steer and control the vehicle, often leading to skidding or loss of control. Hydroplaning is most likely to happen during wet driving conditions, particularly if the speed of the vehicle is too high for the existing water on the road surface.

Improved fuel efficiency and better performance in wet conditions do not result from losing contact with the road, as a vehicle needs to maintain good traction to operate effectively and efficiently. Similarly, while reduced driving comfort can occur when traction is compromised, it is the impending risk of hydroplaning that is the most critical concern when discussing the consequences of losing contact with the road surface. This makes increasing the risk of hydroplaning the most accurate answer.