Silly Tyre Pressure Question

[Skilid]

Feel like an idiot for asking, but I'm going on a 1,000 mile round trip this weekend in my 2 series and the car will be fully loaded (4 people and luggage).

Tyre pressures recommended for 2 people is 32 psi all round. When fully loaded it recommends 36 front and 44 rear. This seems like a big jump. However, my question is do I actually need to load the car up first before I set the pressures, or do I set the pressures before you load up?

Is it even worth bothering with?

 

[Skilid]

Seems like a huge jump for the rear - are you sure your reading the sticker correctly, or does you car have different staggered tyre sizes?

They are staggered. 225/40/18 on front and 245/35/18 on rear. Definitely reading sticker correctly.

Edit:

 

[Skilid]

What's your internal logic for why you might need to load the car up first?
It doesn't matter either way, load does not significantly affect tyre pressure.

Tyre pressures increase on their own when the car is loaded, as the tyre gets squashed. I have no idea how much by though, so thought it safer to ask. I've never really needed to adjust tyre pressures for load before as I've normally only done short trips.