What speed does a small car start hydroplaning?

The exact speed at which a vehicle starts hydroplaning depends on several factors, including tire tread depth, water depth, road surface texture, and vehicle weight. Generally, hydroplaning can occur at speeds as low as 35 miles per hour (56 kilometers per hour) on roads with standing water if there is less than 1/8 inch (3 millimeters) of tread remaining on the tires. However, on smooth roads covered by a shallow layer of water, it can happen at higher speeds. To minimize the risk of hydroplaning, drivers should reduce speed and maintain extra following distance during rainy weather and especially avoid pools of standing water on the road. Proper tire maintenance, including ensuring adequate tread depth, is also crucial for maximizing traction and minimizing the risk of hydroplaning.