Hydroplaning is caused by a buildup of water in front of your tires, which causes your car to ride on a thin layer of water instead of the road. To avoid hydroplaning, make sure you have good tread on your tires. Slow down when roads are wet and avoid puddles. If you find yourself hydroplaning, don’t brake or turn suddenly. Instead, gently ease off the gas until you feel your tires grip the road.