[Fot] Tire temp question

[Bill Babcock]

Tire temperatures that you get from a hot day or autocross runs are useless
for setting up suspension or determiniming appropriate tire pressure. Even
tire temps on a track are relatively inaccurate unless you take a series of
tight turns at good speed and stop immediately to read them without an
intervening straight.


On Apr 22, 2013, at 7:31 AM, sherry robyn <sherryjimmy6116 at att.net> wrote:

> Thanks Bob.  I am running new Toyo Proxes RR.  I don't look for significant
> temps until at least 3 or 4 autocross runs on a hot day.  So far I haven't
> really had the hot days and maybe these tires are a little stiffer.  Last
year
> I
> ran a nearly new set of Hoosier R6 and seemed to be able to read the center
> pressures to determine ultimate pressure.  I ended up with 32 front and 28
> rear.  Jim
>
>
>
> ________________________________
> From: Robert M. Lang
> <lang at isis.mit.edu>
> To: sherry robyn <sherryjimmy6116 at att.net>
> Sent: Mon,
> April 22, 2013 5:33:05 AM
> Subject: Re: [Fot] Tire temp question
>
> Hi,
>
> You can
> only get "good" tire temps on a skid pad. If you try to get temps just
> coming
> off an autocross course, you won't get accurate results. About the only
> tire
> pressure adjustment you can make from autocross is the base pressure that
> you
> need to keep the tire from rolling over.
>
> What I've done is to run the skidpad
> and set the base pressure. Then up it a
> little and measure for even temps.
> Note: the outside wheels do the most work so
> focus on those. Then switch
> directions and get the other side.
>
> From there, when you run autocrosses, use
> the tire pressure to balance the car.
>
> Also, ask around. I get good info from
> other folks and then build on that.
>
> What tires are you running?
>
> regards,
> rml
> ---------------------------------------------------------------------------
> Bob Lang              Triumph TR6!!            |  This space for rent
> Former
> NER Solo Chair                          |
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