Tyre air pressure at WOWA ?

Hello Campergemeinde, I have now taken my (purchased last year) WOWA from the winterquatier and screwed on the wheels. Now my question is, how much air should I blow in there now. It is 185 R 14 tires under a 15 year old LMC 545K with 1400kg total weight, which I also have to take full advantage of. Thanks already and until then, Lars