Question: if my tires say max press 51 PSI what should i run the PSI at?
08-25-2001, 11:55 AM
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Question: if my tires say max press 51 PSI what should i run the PSI at?
i have 225/40 R18's currently i have them at 40 PSI what does everyone else run or what do they recomend? Thanks in advance
08-25-2001, 12:00 PM
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Max sidewall pressure has NOTHING to do with running pressure......
It's only printed there to protect the manufacturer. You can poll others as you have or calculate the correct pressure using vehicle weight and contact patch size*4, though this is a rough estimate only, and difficult to measure to boot.
08-25-2001, 12:55 PM
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36 is recommended by Audi (calculated by weight) I run 40psi
my car does ride harder but the trade-off is less rolling resistance which equals quicker acceleration, less tire wear and better MPG. Works for me!!!
