hydroplaning

[George Harris]

IMHO this theory that hydroplaning depends only on the pressure in the 
tires, and is independent of tread design and contact patch, just 
doesn't make sense.

Think logically about what happens. If you have a vary aggressive tread 
with deep grooves, water in all its forms, wet, snow, mud, can squeeze 
out through the grooves and the tread will make contact with the pavement.

Taking it to the extreme, a very narrow tire will not hydroplane as 
easily as a drag racing slick.

If the above is wrong, my thinking on this subject has been wrong for 
the last 45 years so I hope someone can show me some experiments that 
prove it's wrong :-)

Cheers
George