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Old 05-18-2004, 10:19 AM   #1
Tats
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Default 1st auto-x on so'3's...question...

What tire pressures do you guys reccomond to start with?

Car: 2001 RS-T Coupe
24mm rear bar.
Eibach prokit w/ agx's.
215/45/17 PP so-3's.




Any one??

Tats.
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Old 05-18-2004, 10:24 AM   #2
Midnight_Gold
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I always put 60-65 in the rear and 50-55 in the front.. but that's on my STi... you could probably get away with something close to that..

S-03's roll like a sonoffab****

That, and you get a little better rotation...


- Miranda (the backwards S-03 Queen)
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Old 05-18-2004, 10:27 AM   #3
CirrusWRX
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OK - I am certainly NO expert on this matter WHATSOEVER, but *MY* opinion is that the S03 sidewalls are pretty damned stiff, so I actually run like 40/36. Just my opinion, of course!
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Old 05-18-2004, 10:40 AM   #4
dwx
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When I ran S-03s on my car I ran them at 50F and like 48R. They are much grippier tires once they are almost completely worn out.
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Old 05-18-2004, 10:55 AM   #5
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Rollover depends on few things:

A) Sidewall height (40 series, 45 series, etc)
B) Camber on the car
C) Air pressure

A is fixed for whatever tire you have on the car, leaving B and C to be adjusted. In stock classes, you can't get enough of B so you use C to compensate. B is preferrable to adjust first, then use C for fine-tuning.

Edit: You're also trying to balance rollover with maximum grip and even wear.
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Old 05-18-2004, 01:17 PM   #6
Tats
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Thanks for the input.

I know my RE-92's liked a lot of air. My RE-950's liked a lot less air.

I guess I'll start 46F and 42R and see where I go from there.

Like I said...my rear bar is 24mm and I have some adjustability with the AGX's so getting the car to rotate should not be an issue.
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Old 05-18-2004, 02:04 PM   #7
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Quote:
Originally posted by dwx
When I ran S-03s on my car I ran them at 50F and like 48R. They are much grippier tires once they are almost completely worn out.
True.
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Old 05-18-2004, 02:09 PM   #8
DrBiggly
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Quote:
Originally posted by Tats
I guess I'll start 46F and 42R and see where I go from there.

Usually what I do is start out with too much pressure and just bleed it off as necessary. This will give me higher grip on later runs and save some of the edges (less rollover) on my initial runs where I'm not as likely to be at my maximum speed for the course.
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