I was just about to post this same question. The owners manuel says 2.5-3 PSI. I have mine at 2 right now and it feels really hard. It was scaring me to think of putting in more air. It feels fine to me at 2. I have two different brands of gauges. Maybe I'll find the other one and compare readings.
Thanks guys for the info.
"We are all visitors to this time, this place. We are just passing through. Our purpose here is to observe, to learn, to grow, to love....and then we return home."
Australian Aboriginal Proverb