here's the values from the manual: (assuming 1bar = 15psi)
All petrol engines (except 100HP and 4x4)
155/80R13 or 165/65R14 tyres
'medium load': Front 2.0bar (30psi), rear 1.8bar (27psi)
'full load': 2.2 bar F & R (33psi)
Multijet models:
155/80R13 or 165/65R14 tyres
'medium load': Front 2.2bar (33psi), rear 1.8bar (27psi)
'full load': Front 2.3bar (35psi), rear 2.2bar (33psi)
4x4 petrol with 185/65R14 tyres
'medium load': Front 2.2bar (33psi), rear 2.0bar (30psi)
'full load': Front and rear 2.3bar (35psi)
100HP? My manual is too old for that!
Note that running tyres at just 3psi too low adds 5% to fuel consumption, increases tyre wear and reduces grip. Too high a pressure also reduces grip considerably. Pressures should only be checked or adjusted when the car is cold -- driving raises the pressure as the tyres get warm (Boyles law, if you can remember your physics). This means you shouldn't really drive to a petrol station t check or adjust them, unless its very close by.
by the way - medium load = driver and a passenger or luggage. Full load = 4 people plus luggage
Pete