Don't ever get them above 40psi, they will become grease. I would suggest starting at 35 cold (depending on outside temp) and measure them as soon as you get off the track. I would aim for ~38 hot and adjust based on feel.
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2005 987 - 112K miles PASM + 6-speed - Daily Driver
1988 944 - 240K miles- Race Car
1974 911 Targa - new project
2009 Triumph Street Triple R - 27K mi - Blazen Orange
1976 Ford F250 camper special - tow vehicle
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