Yes, you are correct. If you run too low of a pressure, the tire will heat up alot more and the pressure will rise just a tad more. You will also get more tire "roll" around the corners. I was told the magic number for the track was about 5psi of pressure rise.

Dave, you are right on track. When I was in Japan, Harc Pro recommended around 1.8-1.9 (about 30psi). This would put your post-track temp at around 35.

On the street, it is a totally different story. You should start out with a tad higher pressure with less pressure rise. This is what the street compound tires are designed for.

In a nutshell, run around 30psi for the track and 34psi for the street.
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Paul Herr
'88 FZR4/GSXR/YZF Frankenbike
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