What is the main cause of hydroplaning?

The main cause of hydroplaning is water accumulation on the road. When there is a significant amount of water on the surface of the road, especially during or after heavy rainfall, tire tread may not be able to channel all that water away from the contact patch of the tire with the pavement. This can lead to a situation where the tires lose contact with the road surface and ride on top of the water. This loss of traction can result in a lack of control over the vehicle, making it difficult to steer or brake effectively.

While factors like excessive speed, poor tire maintenance, and conditions such as drunk driving can contribute to the risk of hydroplaning, the fundamental issue lies with the presence of water that creates the conditions for hydroplaning to occur. Maintaining a safe speed and proper tire conditions can help reduce the risk, but ultimately, it is the water itself that causes the tires to lose grip.