Alfa Romeo Giulia 952 2017 Owner's Handbook Manual page 260

COLD TYRE INFLATION PRESSURE
When the tyres are warm, the inflation pressure should be +4.35 psi (+0.3 bar) in relation to the recommended figure. However,
recheck that the value is correct with the tyre cold.
If it is necessary to raise the vehicle, refer to the "Raising the vehicle" paragraph in the "In an emergency" chapter.
2.9 V6 Engine
Tyres
245/35 R19
265/35 R19
285/30 R19
(*) Suitable pressures for all types of tyres (summer and winter)
2.0 T4 MAir and 2.2 JTD engines
Tyres
205/60 R16
225/55 R16
225/50 R17
225/45 R18
225/45 R18
255/40 R18
225/40 R19
225/40 R19
255/35 R19
(*) Suitable pressures for all types of tyres (summer and winter)
258
Unladen/medium load [psi / bar]
Front
(*)
34.8 / 2.4
— 31.9 /2.2
— 31.9 / 2.2
Unladen/medium load [psi / bar]
Front
(*)
39.2 / 2.7 42.2 / 2.9
31.9 / 2.2 34.8 / 2.4
(*)
31.9 / 2.2 34.8 / 2.4
(*)
31.9 / 2.2 34.8 / 2.4
29.0 / 2.0
— 31.9 / 2.2
34.8 / 2.4 37.7 / 2.6
34.8 / 2.4
— 33.4 / 2.3
Rear Front
—
42.2 / 2.9
—
(*)
—
Rear Front
(*)
39.2 / 2.7
39.2 / 2.7
(*)
39.2 / 2.7
(*)
39.2 / 2.7
— 34.8 / 2.4
—
39.2 / 2.7
— 39.2 / 2.7
—
Full load [psi / bar]
Rear
(*)
—
42.2 / 2.9
(*)
42.2 / 2.9
Full load [psi / bar]
Rear
(*) (*)
42.2 / 2.9
43.5 / 3.0
(*) (*)
43.5 / 3.0
(*) (*)
43.5 / 3.0
—
37.7 / 2.6
43.5 / 3.0
—
42.2 / 2.9