Opel Automobile Owner's Manual page 236

236 Technical data
Tyre pressures for vehicles with all-wheel drive
Saloon
Engine Tyres
A20NHT with manual
225/50 R17
transmission
225/45 R 18
215/55 R17
225/55 R17,
235/45 R18
245/45 R18,
245/40 R19
245/35 R20
Only permitted as winter tyres.
5)
Reinforced variant (XL).
6)
Comfort with up to
3 people
front
[kPa/bar]
([psi])
250/2.5
5)6) ,
(36)
5)6)
5) , 230/2.3
(33)
5) ,
240/2.4
6)
(35)
ECO with up to 3 people
rear front rear
[kPa/bar] [kPa/bar] [kPa/bar]
([psi]) ([psi]) ([psi])
230/2.3 – –
(33)
210/2.1 270/2.7 260/2.6
(30) (39) (38)
220/2.2 270/2.7 260/2.6
(32) (39) (38)
With full load
front rear
[kPa/bar] [kPa/bar]
([psi]) ([psi])
250/2.5 300/3.0
(36) (43)
240/2.4 290/2.9
(35) (42)
250/2.5 300/3.0
(36) (43)