Call all the dealers you can think of.......of cars that are imported to the US from japan.
I think you will find that all of them (from Japan) come in with <>50 pounds of air.
They do that to keep the tires from flatspotting on the ship (3 weeks in one spot) and they also are able to tie the cars down closer to each other (as close as 2") because the cars do not tend to "lurch" around.
This was the "official" answer from Mazda some years ago on the Miata forum.
Obviously they are supposed to reduce that pressure to whatever the factory recommends before sale.
Mine were fine on my Murano.
But my Miata was 52 pounds all around when I got it home.
Homer