[Fot] Toyo hot/cold tire pressures

[Bill Babcock]

I check hot tire pressures, and correlate it to cold later, but that's just so
I can predict what cold pressure will result in what hot. I don't know of any
reason to equalize tire pressures that way. When you read tire temperatures
you always find one or two wheels that are a lot colder than the others,
usually because of the nature of the track. When I find a tire that's running
a lot hotter on a given track I pay closer attention to the difference between
center and inside edge temperatures. That hard working tire will affect
handling a lot, and getting the temperature spread across the tire to be equal
will often improve lap times.

-----Original Message-----
From: fot-bounces+billb=bnj.com at autox.team.net on behalf of
WEmery7451 at aol.com
Sent: Sun 7/29/2007 11:11 AM
To: keithfiles at btinternet.com; tony at tonydrews.com; toodamnfunky at comcast.net;
fot at autox.team.net
Subject: Re: [Fot] Toyo hot/cold tire pressures

In a message dated 7/29/07 4:43:21 AM Pacific Daylight Time,
keithfiles at btinternet.com writes:

<< At RA in May I ran somewhat less pressure in my Toyo tires on my TR4 than
T
ony and after much experimentation elected on 28 front and 26 rear which  gave
me the balance that I was comfortable with.  >>

Does anyone try to adjust their tire pressures based on measuring tire
pressures after you come off of the track?  For example, If I start with 24
pou
nds
in slicks before going onto the track, and then measure the tire pressures
after coming off of the track: LF= 30 psi, LR=29 psi, RF=28 psi, and RR=28
psi.
The LF and LR are then dropped down to 28 psi.  Measure the pressures after
the
tires cool, write down these readings, and start with these pressures for the
next trip onto the track.  This one guy who drove the NASCAR series one year
told me that that is what they do.

My readings are not as accurate as they could be.  First there is a cool off
lap, and then nobody is allowed to stop right after coming off of the track.
Everyone has to mutter back to their location in the pits.

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