I'm far from an expert, but I've run the same car with the same tires at 4
events. It took 42 psi in the front to prevent the sidewalls from rolling.
Then play with the back to promote/prevent oversteer. I ended up at 36-37
psi in the back. At speed these pressures will feel loose, but you won't be
taking 70 mph sweepers at an autocross.
These tires are pretty horrible for an autocross. The newer pilot xgt-v4
are stiffer and offer better grip. This weekend I'm replacing the stock
tires with some nittos after deciding to buy some autocross tires.
Matt
Date: Thu, 27 May 1999 22:08:41 -0400
From: Greg and Valerie Holden <gholden1@nycap.rr.com>
Subject: Tire pressure for Michelin XGTV4's
Hello from an autox novice.
I will be running my first autox on 6/20 and am wondering about tire
pressure. I have a 96 Integra
GS-R with stock suspension, wheels and tires. Tires are Michelin XGTV4
195-55-15.
I went to an autox last week that got rained out. Before going, I upped my
tire pressure to 38psi
front and 36psi rear (up from 36f, 32r factory). The car feels less stable
in high speed (70mph)
sweepers with this pressure. Traction is also worse. All the FAQs say to
boost pressure until chalk
marks tell you you're not rolling onto the sidewall. Is this advice meant
soley to avoid tire
damage? I don't understand how losing traction and stability is going to
help me at an autox.
Has anyone run a stock GSR in autox's? What pressures did you use?
Thanks in advance for any input.
Greg Holden
96 Integra GSR
MoHud SCCA
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