Sorry to bring up an old thread, but I see some confusion here. The manufacturer sets the tire pressure based off of gross vehicle weight. Which is a bit higher than curb weight. There's a difference between curb weight and GVW.
The
gross vehicle weight rating (GVWR), or gross vehicle mass (GVM), is the maximum operating weight/mass of a vehicle as specified by the manufacturer[6] including the vehicle's chassis, body, engine, engine fluids, fuel, accessories, driver, passengers and cargo but excluding that of any trailers.[7] The term is used for motor vehicles and trains.
The weight of a vehicle is influenced by passengers, cargo, even fuel level, so a number of terms are used to express the weight of a vehicle in a designated state. Gross combined weight rating (GCWR) refers to the total mass of a vehicle including all trailers. GVWR and GCWR are used to specify weight limitations and restrictions. Gross trailer weight rating specifies the maximum weight of a trailer and the gross axle weight rating specifies the maximum weight on any particular axle.
Curb weight (American English) or kerb weight (British English) is the total mass of a vehicle with standard equipment and all necessary operating consumables such as motor oil, transmission oil, brake fluid, coolant, air conditioning refrigerant, and sometimes a full tank of fuel, while not loaded with either passengers or cargo. The gross vehicle weight is larger and includes the maximum payload of passengers and cargo.[1]
This definition may differ from definitions used by governmental regulatory agencies or other organizations. For example, many European Union manufacturers include the weight of a 75-kilogram (165 lb) driver and luggage to follow European Directive 95/48/EC.[2] Organizations may also define curb weight with fixed levels of fuel and other variables to equalize the value for the comparison of different vehicles.
The United States Environmental Protection Agency regulations define curb weight as follows: Curb weight means the actual or the manufacturer's estimated weight of the vehicle in operational status with all standard equipment, and weight of fuel at nominal tank capacity, and the weight of optional equipment computed in accordance with §86.1832–01; incomplete light-duty trucks shall have the curb weight specified by the manufacturer.[3]
For reference
https://en.wikipedia.org/wiki/Vehicl..._weight_rating
So with all of that said, the manufacturer set the tire pressure based off GVW. So unless your running around in a fully loaded vehicle, pushing the maximum GVW, setting tire pressure to what the door sticker says may cause them to be slightly over inflated. I tend to go 2-3 lbs less than what the door sticker says and pay attention to where the tire is wearing when I swap them or rotate them. Doing this should give you a better idea of what tire pressure to actually run on your vehicles. I currently run 34psi cold on my 2014 2SS and see even wear across the treads.