> Maybe I should ask this another way? Has anyone else out there spent
> Saturday getting their pre-race tyre pressures just right. Then you arrive
> at the track on Sunday morning (after a nice crisp night) and found they
are
> four pounds lower and you say to yourself "do I have a leak, or are things
> as they left them or what"?
>
> Get my drift? And if I'm missing something very obvious, just be gentle
when
> you let me know.
>
IMHO, yes you are missing something very obvious. The time to make the
definitive check on pressures is just before you go out, not the day before.
Yesterday's readings are irrelevant. Even if you raced yesterday.
Of all the various "settings" for a car, this one is too easy. Trying to
figure out a bunch of mathematical formulae is just overcomplicating a
simple task. Read the gauge, add or bleed air as necessary, done.
I've had tires gain a pound or two on one side within an hour just because
that's the side that was in the sun that morning.
And screw all that other chatter about exotic gases, etc. An air bubble and
a good tire gauge (the kind with a bleeder valve) are cheap and useful.
"Getting it just right" is just pssssssssssssssst, psst, psst. (And I'll set
mine to half-pound increments at times).
--Rocky Entriken
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