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Old 2007-03-21, 02:29 PM   #153
sperry
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Real Name: Scott
Join Date: Nov 2002
Location: Portland, OR
Posts: 20,335
 
Car: '09 OBXT, '02 WRX, '96 Miata
Class: PDX/TT-6
 
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Quote:
Originally Posted by BAN SUVS View Post
Scott, out of curiosity, how does running greter and lesser tire pressure in your over-width tires affect the lack of precise feel? Which is worse in terms of affecting your times?
I've never played with tire pressure in terms of attempting to reduce the sidewall flex issue, so I don't know that I can specifically comment on that. Normally, if the event is warm enough to generate real heat in the tires, I adjust the front pressures to get a linear (if not even) I-M-O temp gradient. Then adjust the rears for handling purposes.

Running more pressure in the tires theoretically should lessen the transitional bounce, but I get the gut feeling that it would reduce overall grip under braking and steady state turning far more drastically than the benefits from "nicer" transitions. But I'm just guessing.

All I know is that over the years, I've found myself going lower and lower in my tire pressures and finding more and more grip. Going back to 50 psi in the tires seems like a step backwards.
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