Quote:
Originally Posted by XYZ
You can inflate your tires considerably more than the sidewall rating. For example, if the sidewall rating is 28, you can easily inflate to 40 PSI. You can expect better FE from over-inflation, but also a much harder ride.
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I think you're confusing some terms. The sidewall max rating is the number on the tire, usually 44 or 51PSI for passenger tires. The manufacturer recommended pressure is on the door jamb and around 35PSI for cars and small SUVs. Inflating over the manufacturer recommended is generally considered to be safe, inflating past the sidewall max can be asking for trouble.