I run mine at manufactureres specs initially and adjust accordingly... no maker is going to tell you pressures that chew thru his tyres deliberately.. he'll be out of business in a year.

You also cannot just compare tyre pressures... there will be anything up to 15 maybe 20 PSI difference between LT and Passenger tyres, ply's, rim width, suspension etc and so some people here will be quoting apples and others oranges... some will have utes with an ally tray that skitter everywhere at 38 PSI others will have Telstra cabs with a heap of gear that need 48 PSI

The sidewall presure is also meaningless as other than a max inflation figure which is the sole reason that it is there. Remember the bloke who made the LT tyre designed and constructed it to go on Light Trucks, thats any Truck/4WD/Vehicle single/dual wheel etc etc NOT Nissan Patrols in particular... sama sama Passenger constructs.

Given a specific tyre manufacturer, type, size, rims and identical vehicle...Some people will run at say 36 PSI looking for comfort and another will choose say 44 PSI in search of that last bit of fuel economy they can get and bugger the teeth rattle.