Opel Automobile Owner's Manual page 253

Engine Tyres
255/35 R20
All Temporary spare
wheel
Reinforced variant (XL).
8)
Comfort with up to
3 people
front rear
[kPa/bar] [kPa/bar]
([psi]) ([psi])
270/2.7 (39) 250/2.5 (36) –
8)
420/4.2 (61) 420/4.2 (61) –
Technical data
ECO with up to 3 people
front rear
[kPa/bar] [kPa/bar]
([psi]) ([psi])
–
–
253
With full load
front rear
[kPa/bar] [kPa/bar]
([psi]) ([psi])
280/2.8 (41) 340/3.4 (49)
420/4.2 (61) 420/4.2 (61)