I think that would depend on what type of tires the vehicle has. The best thing would be to ask a tire shop.
For long wheelbase high top 1800 (2003) the recommended pressure is 65 p.s.i.
pressures
its printed on inside of your drivers door,,,,
read the tire pressure max on the tire that is what the tire manufacture recommends you to run if they recommend you to run 35 i would run 32 in the rear
35 front and back.
32psi front tyres 34psi rear tyres
I only know the correct tyre pressure for a Citroen Picasso , not a Citreon Picasso - sorry
0n a 2004 tyer pressures are 65lbs all round. on inside of drivers door.
2.4 Bar/ 34 PSI back/front
Does a Citroen berlingo Roma home 2001 have a spare tire
Tyre pressures for a Citroen C3 standard tyres Front 30 PSI (2 bar) Rear 33 PSI (2.2 Bar)
Front 2.0 bar Rear 2.2 bar Note: this is for a loaded car