you can check in the car settings thing, you can see the pressure for different types of driving and the different tire sizes.
the dealer does 2.2 bar by default (I think its the same as stated on the door sticker), but the settings in the car go up to 2.8bar if you want eco driving 2.6 for top speed runs and 2.3-2.4 for normal load runs (also the numbers change depending on the outside temperature there)