Do you currently have car insurance? Insurance is mandatory to drive in California Yes I have insurance. But please show me your best quotes. No, please help me find the best insurance. Question Hydroplaning: Answers Only occurs at extremely high speeds. Can occur at speeds as slow as 30 mph. Happens most frequently when tire pressure is too high. Happens most frequently when tires have good tread. Explanation If there is enough water on the road, hydroplaning can occur at speeds as low as 30 mph. It is most likely if the tires' air pressure is too low or if tires' tread is worn. Take a FREE Practice Test Now This questions appears in the following tests: Colorado Knowledge Test Class B , Alabama Passenger , Texas Passenger ,