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      12-02-2014, 12:24 PM   #9
rz3
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Drives: SO/SOe F80 M3
Join Date: Jun 2014
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Good info and it applies to whatever is in your tires. O2 will expand more, which means pressures will get even higher after warm up. A few HPDEs ago I met a guy who explained a lot to me and helped me figure out what pressures to run and how to tell by my tire temps. I lowered the starting pressures a couple of pounds before my runs and found that I was able to run much better. Before that, it was like driving on basketballs feeling every bump and sliding around on the center of the tires.

If you watch racing pros they always start with low pressures so that the tire can come up into its optimum range. If you start too high, the tire will over inflate as it heats and you will have less contact with the road.
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