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Old 02-21-2011, 04:03 PM
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Silverback51 Silverback51 is offline
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Cobra Make, Engine: Superformance # 532, 466 BB, 560HP
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Quote:
Originally Posted by tommygold View Post
One update for those playing close attention. For the practice runs, I didn't use Launch Control because I didn't believe it would shift gears for me. Turns out that isn't true. So I can use LC and start from 3500 rpms. I plan to drop the rear tire pressure by about 5-10 psi to make sure I grip. But that should give me a much better start. If I can find some time to get to a track, I'll post the results. -Tom
You are not running wrinkle wall slicks, so be careful with the lower tire pressures.

A wrinkle wall slick works with a lower tire pressure as it allows a very large flat contact patch with the pavement. Your tires will not react the same. In fact it's possible that with lower pressures the tires will cup in the center and you will have less of a contact patch with the pavement.

And what's worse is that they can become very unstable at speed. If you are serious about this, start by lowering them a couple pounds and make a run. Repeat until you feel the times are lower and the car still feels safe.
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