Brewer Well I believe that is dependant of the profile/width of the tires. I use 2.1 kilos(if that helps) dunno..
JohnnyN AS QUOTED IN THE VAUXHALL OWNERS MANUAL: Saloon & Hatch = 205/55/16 at normal pressure with upto 3 persons, FRONT = 32 psi REAR = 32 psi If full load then its, FRONT = 33 psi REAR = 42 psi