255/45 R18 xl 103 tyre pressures correct?

[zerofour]

Unladen 3.0 bar front and 2.8 bar back seems low on my 150 Ocean - it’s what the label states on the drivers side door sill. They also look under inflated to my eye. My 17” tyres were 3.7 / 3.5 bar. What pressures do others use?

 

[motacyclist]

Here’s what it says on mine. I keep them both at 3.1, the Cali carries a lot of weight anyway. I don’t know whether the Transporter van would have the same sticker.

 

[Sp0_0k]

You can't go wrong inflating the max the tire supports. With such weight, I don't see it wearing out middle faster.
After, very uneven wear on 2 sets and several geometry alignments that didn't find any problems I run 50PSI as suggested by many tire shops and life is better now.