Opel Automobile Owner's Manual page 154

154 Technical data
Combo Tramp / Arizona
Engine Tyres
Z 14 XEP 185/60 R15
Z 16 YNG
185/65 R 15
Z 13 DTJ
Z 17 DTH
Recommended: Goodyear Eagle Hydragrip.
18)
Comfort with up to 3 people
front
[kPa/bar] ([psi])
240 / 2.4 (35)
18)
With full load
rear front
[kPa/bar] ([psi]) [kPa/bar] ([psi])
240 / 2.4 (35) 240 / 2.4 (35)
rear
[kPa/bar] ([psi])
350 / 3.5 (51)