According to Dave Hinz :
On Sun, 23 Sep 2007 02:24:14 GMT, Leo Lichtman wrote:
Jack your car up and put a bathroom scale under a wheel. Deflate the tire
and then lower it onto the bathroom scale enough to make the sides bulge out
the same amount as when it's holding up the car. That's how much you have
to add to the pressure x area product. My guess is it's going to be a very
small correction.

Holy crap, Leo, how heavy does your scale go up to?

He said to *deflate* the tire (presumably with the valve stem
removed), so when you lower the car just enough to duplicate the
sidewall bulge, you are measuring only the force needed to bulge the
sidewalls -- which you need to subtract from the calculated weight on
that wheel.

You don't put the *full* weight on the bathroom scale -- at
least not more than once. :-)

Enjoy,
DoN.
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