How to Get Water Out of a Tire

Here's that tire, half full of rainwater.
When they lie on their backs 
all summer long
tires do that, don't they.

A toroidal teaser:
flip it, kick it, nothing doing.
Roll it down a hill,
the water couldn't care less.
Heave it to your wits' end,
away and gone:
a churlish splash.

Like these thoughts
inhabiting my head
no pounding of fists can knock loose.