i can drive as low as 20psi.. before i get stuck on the car anything below that.
But don't drive low. You'll break the air strut or blow out the strut. Like i did already. Had to buy a whole new set.
easystreet recommends min psi of 10psi anyways.
here my pic from a month ago
My pinch weld lip is beaten down, but it didn't make a difference.