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Old 10-06-2002, 08:22 AM
coyled coyled is offline
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Join Date: Jan 2000
Location: scottsdale,az,
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Well, I ran PIR yesterday. The cobra started out with lots of oversteer. I thought at first, that my back tires were goimg away. I started making air preasure adjustments. I started the day at 22 pounds cold all the way around. I wound up at 16 pounds in back and 19 in front cold. Hot preasures were 24.5 to 25 all the way around. At this point, the car was working great, controlled drifts in several corners. The spring change up front allows the car to turn in quicker and reduces the chassis roll I was feeling before. The tire presure changes really helped. I know that goodyear says 28 to 30 hot will give you the best bite. I had been hearing from some Stock car guys running the goodyear bias ply's that they were running less preasure, starting in the teens cold, mid 20's hot. Well it really helped me. Comments? I think I'm close now as far as set up goes. The driver as usual needs all the help. Good group of guys running too. There was only one car that got by me yesterday. A well modified zo6. Lots of other zo6's, zr1's, 911's and a few mustangs. At PIR you get to run turns 3 and 4 in the cup oval which is around 100 mph for me. Fun but scary with that wall up there. Scott
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