Ok, I used to have a Mitsu VR4 (AWD) that used to hydroplane all over the place. I ran 18/245/40 all around. On my S I run 18/225/40f 18/245/40r and almost never hydroplane. Anyone want to guess why? I'm assuming it was the wider front tire on the mitsu. Tires have always been summer high performance.

 

If you are looking for guesses I would probably try the wheel and tire forum. Probably get more expert responses over there.

My S hydroplanes like a boat if I let my tires get very worn even with the proper size.

 

has to do with your tires. the model & tread mainly. The width partially (225 to 245 isn't that big of a diff).

 

Maybe it's my sick driving skillz yo! lol.
I have the J's front bumper which makes a noticeable improvement in front downforce at 70+ speeds. I'm obviously going below that in heavy rain, but maybe that is a contributing factor?

 

Also the vr4 (either of them) are a good bit larger and heavier than the S, which can add to hydroplaning.

 

^ Over 1k lbs heavier. I thought heavier would be better (atleast for hydroplaning)?

 

That's backwards... greater weight would decrease the potential for hydroplaning.

However, tire tread (type/life) and width also have a huge impact.

 

lol...I hydroplaned the Ambulance through the intersection the other day going 35-40 mph...I think it weighs around 20 ton...

Vtec in the rain = new wheel and suspension .02

 

s2k's are so fun in the rain hahahah. but super tempermental.

as far as the hydroplaning on the VR4, thats strange, i dont know how the theory works, but i figured the awd would help somehow hah.