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RE: Tyre pressures, was great school

To: "Bay_Area_Autocross_List" <ba-autox@autox.team.net>
Subject: RE: Tyre pressures, was great school
From: "Kelly, Katie" <kkelly@spss.com>
Date: Mon, 8 Apr 2002 15:18:11 -0700
I said, "Wouldn't that put the weight near the outside of the turn?"

Make that TIRE. I meant to type TIRE. Hello.

Katie

-----Original Message-----
From: Kelly, Katie 
Sent: Monday, April 08, 2002 3:11 PM
To: Bay_Area_Autocross_List
Subject: RE: Tyre pressures, was great school


If that's true, okeedoke, but that doesn't make much sense to me. When cars 
TURN, you know, around corners, wouldn't that put the weight near the outside 
of the turn? Wouldn't it make sense that if you had even heat distrubution, 
that you're maximizing the rubber that's on the ground?

This is a guess on my end. I don't know much about this stuff. Charlie Davis 
taught me how to use a home made pyrometer (use your hand!) that's worked well 
for me.

Katie

-----Original Message-----
From: Alan Gruner [mailto:algruner@yahoo.com]
Sent: Monday, April 08, 2002 2:45 PM
To: Jerry Mouton; Michael R. Clements; Bay_Area_Autocross_List
Subject: Re: Tyre pressures, was great school


The wisdom I have heared is that you want the inside
about 20 degrees hotter than the outside. 

--- Jerry Mouton <jerry@moutons.org> wrote:
> Michael,
> 
> Have you checked with a pyrometer?  Next time I'm
> there
> ask me, you can use mine.  Temps should be even
> across
> the tread.  
> 
> Jerry
> 
> Jerry Mouton        mailto:jerry@moutons.org   
> Laissez les bons temps rouler!
> 
> ----- Original Message ----- 
> From: "Michael R. Clements" <mrclem@telocity.com>
> To: <kirkm@zeta-idt.com>; "'james creasy'"
> <Black94PGT@pacbell.net>; "'Autocross'"
> <ba-autox@autox.team.net>
> Sent: Monday, April 08, 2002 1:41 PM
> Subject: RE: great school
> 
> 
> > Kirk,
> > 
> > Are you talking about a '93 Mustang? If so,
> doesn't that car weigh like
> > 3300 lbs. with more than half over the front
> wheels? So we're talking
> > about cars that are roughly 1,000 lbs. lighter
> with close to 50/50
> > distribution. I would expect lower pressures, but
> how much lower?
> > 
> > James, your pressures seem low even for your light
> car. But maybe I
> > should try it. The treadwear goes all the way to
> the sidewall corner but
> > not over. So maybe I can go even lower?!? At that
> low pressure I'm
> > afraid of damaging the rims. Maybe I shouldn't
> worry about that until
> > the treadwear starts coming over the corner of the
> tire.
> > 
> > On my 2850 lb. RX-7, using V700s, I got the best
> sticktion at 30 F / 28
> > R. Using R1s on that car, the sweet spot was 29 /
27.
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