urgent! best tire temp ( Hoosier or others)

[Konstantin]

Hello
what is the optimum ture temp for hoosier or teh other 13" FSAE tires
what is a goos tire pressure to start?
We start with 0.7 bar Tire pressuer and we get max 40 degree Celsius. not hot enogh for teh tires
any ideas ? infos.
It is urgent a stomorow we have the germany fun event at Porsche Leipzig and we need these infos
Thanks

Konstantin

[Konstantin]

Hello
what is the optimum ture temp for hoosier or teh other 13" FSAE tires
what is a goos tire pressure to start?
We start with 0.7 bar Tire pressuer and we get max 40 degree Celsius. not hot enogh for teh tires
any ideas ? infos.
It is urgent a stomorow we have the germany fun event at Porsche Leipzig and we need these infos
Thanks

Konstantin

[Denny Trimble]

You should see 120F to 140F on Hoosier R25A's. If you're not getting that, drive like more of an ass http://fsae.com/groupee_common/emoticons/icon_smile.gif

[jack]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">...drive like more of an ass http://fsae.com/groupee_common/emoticons/icon_smile.gif </div></BLOCKQUOTE>

what is the metric conversion factor for the american "ass" driver, though?

[Konstantin]

thanks
I apreciate this

Konstantin

[Frank]

agreed on (120F-140F) 50C-60C average temperature

remember the inside temperatures will be higher than the outside

probably (10F-20F) 5C-10C difference

depends on how much inside tyre wear you tolerate

[Agent4573]

we run the hoosiers around 10psi of pressure(.7) bars and get temperatures right between 140F and 190F(60-90C) when the track temp is about 100F(38 C). I'm not a big tire guy though so I'm not sure if you mean your actual tire is 13 inch run on a 10 in rim, or your running the 20 inch tires on a 13 inch rim. We had a blowout of a 20 inch rear tire when we dropped below .7 bars, so even if your centers are hot, don't drop pressure below that point or your getting into dangerous territory.

[B Hise]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Frank:

remember the inside temperatures will be higher than the outside
</div></BLOCKQUOTE>

do you have adjustable camber?

Bryan

[Frank]

yes,

and 3 pyros and a data logger

[yofa]

what do you guys do for the single-lap autox?