rec.autos.simulators

by Jo » Mon, 15 Apr 1996 04:00:00

Rick Genter said:

This was news to me- I had been trying to cool my tires off whenever
they came up to 220.

Anybody out there care to detail some of the ways to get tire temps
up? Obviously, inflation pressure is step one. And I've found that
even small shock changes radically change temps around the car, but
the pattern is very unclear, I guess because what it is doing most of
all is changing the way I drive the car. I've not seen enough change
with wing adjustments to warrant changing them for the tires.

It is that front-right tire at Long Beach that hardly even wants to
break 200- that is a real problem for me...

by **Josh Beauli** » Tue, 16 Apr 1996 04:00:00

>Subject: ICR2- getting tire up to 250 degrees
>Date: Sun, 14 Apr 1996 05:25:59 GMT
>Rick Genter said:
>>The optimal temperature is 250 degrees.
>This was news to me- I had been trying to cool my tires off whenever
>they came up to 220.
>Anybody out there care to detail some of the ways to get tire temps
>up? Obviously, inflation pressure is step one. And I've found that
>even small shock changes radically change temps around the car, but
>the pattern is very unclear, I guess because what it is doing most of
>all is changing the way I drive the car. I've not seen enough change
>with wing adjustments to warrant changing them for the tires.
>It is that front-right tire at Long Beach that hardly even wants to
>break 200- that is a real problem for me...

Rick Genter's wrong -- Terje Johanson is right!! The optimum tire pressure at
road/street courses is somewhere between 220-235. At 245-250, you're on ice.
(I've done the testing so don't try to tell me otherwise.) The optimum temps
for ovals (because of harder tires maybe?) IS around 250, though.

by Jo » Tue, 16 Apr 1996 04:00:00

>>Subject: ICR2- getting tire up to 250 degrees
>>Date: Sun, 14 Apr 1996 05:25:59 GMT
>>Rick Genter said:
>>>The optimal temperature is 250 degrees.
>>This was news to me- I had been trying to cool my tires off whenever
>>they came up to 220.
>Rick Genter's wrong -- Terje Johanson is right!! The optimum tire pressure at
>road/street courses is somewhere between 220-235. At 245-250, you're on ice.
>(I've done the testing so don't try to tell me otherwise.) The optimum temps
>for ovals (because of harder tires maybe?) IS around 250, though.

Yikes! Now I am really confused! I have to say, I've always guessed
220 was about right. But our man Rick says differently. Maybe he was
talking about the harder compounds...

Papyrus really should have gone in to at least a *little* detail on
this in the manual. Unless I misunderstand, these numbers are simply
manufacturer's facts, not "mysteries of the track" we need to unravel
like wing adjustments or shocks. I've emailed them, oh, 3 times or so
asking about tires, never got anything back.

by **Mike Manthe** » Thu, 18 Apr 1996 04:00:00

I've found that the softer compounds cannot handle the higher temp.
If I watch the tire temp window, soft tires go "yellow" at 230, but
harder compounds as used on big ovals are still "white" numbers up
through 250. Watching the color of the temp reading may be more
informative than a flat figure---

by **Joseph.Led** » Fri, 19 Apr 1996 04:00:00

When the tires flash yellow at around 230-ish does that mean
it's time to pit and change the tire?
Tankz in advance.
Joe Ledva

by **Gregory Fu** » Sat, 20 Apr 1996 04:00:00

>When the tires flash yellow at around 230-ish does that mean
>it's time to pit and change the tire?

No, that just means you're running the tire a bit hot. If you hit f5 and
it shows yellow on the graph, then you need new tires.

Gregory Fung

Vancouver, B.C., Canada

IICC3 Ground Effects/Rebel Alliance Lola-Ford-Firestone