Way back when,, I had a professor that taught a class called "Vehicular Safety",
and it was a junior level Engineering elective, that was designed to be an "easy A grade".
As an Engineering elective, many were required to take such a class,
this professor decided to use the class to create safer drivers. He taught things that could save you in an automobile.
He designed the class to be an easy A to attract the most students, and create safer drivers.
ALL the football players were ALWAYS in this class,,
Well one of the things he taught,, was the speed at which an auto will hydroplane.
NASA did extensive research into this,, and found a simple calculation would determine the speed to hydroplane.
I could type for a day, telling all the professor showed us to prove his point, but, it boils down to this.
"A car will hydroplane at ten times the square root of the tire pressure."
Yea, it will be plus, or minus a little,, but, it will be close.
So, if you have 25psi in your tires, expect to hydroplane at 50MPH
At 36psi, expect to hydroplane at 60MPH
If you want to drive 70MPH,, on rain slicked roads,, you better pump up your tires to 49psi..
Most airplanes have crazy high tire pressures,, not to hold up the plane,,
the tire pressure is high, so that the plane will not hydroplane when landing in the rain storm.
Sure, YOU got away driving at a high speed, at lower tire pressure,,
BUT,, that will not always be the case,,,,,,,,,,,,,,,,,,,