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Old 12-11-2002, 10:16 PM   #1
SCCARacr
Scooby Newbie
 
Member#: 27311
Join Date: Oct 2002
Location: Palm Harbor, FL
Vehicle:
2003 WRX
Midnight Black Pearl

Lightbulb Road course tire pressures . . .

Any tire pressure recommendations for an '03 WRX that will run on 225-50-16s Goodyear GSCSs? I'm thinking 34 in front, 30 rear.
The only suspension mod is an Eibach pro-kit . . .


Opinions?
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Old 12-11-2002, 10:32 PM   #2
HoRo1
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Join Date: Feb 2002
Chapter/Region: International
Location: Zhuhai, China
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I assume that the pressures listed by you are cold. You should measure your pressures hot, so as soon as you come into the pits after your first session check the pressures immediately.

I suspect that your hot pressures will be 6-7lbs higher than cold which translates to about 40 at the front and 36ish at the back. I have never used that type of tyre, but I think that you might experience understeer because your front tyres will have a smaller contact patch owing to the higher pressure. I usually run 40-41 hot fr/rr P Zeros (I have a lot of suspension mods). I feel that I'm still running 1 or 2 lbs too high so I will try 39-40 next time at the track.
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Old 12-11-2002, 10:39 PM   #3
SCCARacr
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Join Date: Oct 2002
Location: Palm Harbor, FL
Vehicle:
2003 WRX
Midnight Black Pearl

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Yes, those are cold . . . will actually probably start at 32/30 and check temps when I come in . . .
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