Hydroplane
 

Does a lowered car hydroplane more than a car sitting at stock heighth? Or is hydroplaning purely a tire issue?

I imagine it's purely a function of the tire contact patch. Maybe if a lowered car was decambered, ala VW bug, it would be less susceptible to hydroplaning.

I'm thinking mostly a tire issue

If anything, it should be less for the lowered car. Assuming you need a certain speed to hydroplane, some aero effect of the lowering may come into play.

Of course, AFA air under the car and lift, it's different for all cars.

if the car is low enough that the lip/bumper/suspension is actually hydroplaning....yer talking about probably F1/LMP during rain races.

on a street car able to make it over a speed bump, hydroplaning is just a tire thing.

Not so fast there krystar. If you know the turbo wing/ chin spoiler deal for a 911, you wouldn't say that. A few things have to occur for hydroplaning to occur. Of course tire condition is a factor. Others are speed and the amount of water on the road surface. If the pressure of the water under the tire gets high enough (speed) then the car will float (weight). Add some downforce and the formula changes. This assumes the same size tire width.

Now don't tell me you don't know that a 911 and many other cars lift at high speeds. And of course you know that Porsche has attended to the issue. And so have many of us when we lowered our cars. They don't lift as much.

I think you could conclude that would result in better stability on a very wet road. Up to a point when the weight of the car is overcome with the force of the water.

car dynamics have almost no effect on hydroplaning on a street car.

Aquaplaning, also known as hydroplaning, a loss of steering or braking control when a layer of water prevents direct contact between tires and the road, runway, or other surface. can be done with less than .25" of water. dont ever jamm on the breaks! slowly lift off the gas/brakes and you should regain control.

bottoming out a f1 on the skid plank isnt really hydroplaning by deffinition

love how So Cal guys always bring this up the second a rain drop appears or a lawn chair is blown over.