Alfa Romeo Giulia-GTA Owner's Handbook Manual page 218

Cold inflation pressures with increase of +2.9 psi (+0.2 bar) due to tyre heating
Unladen/medium load (psi / bar)
Front
33.4 / 2.3 (*)
36.2 / 2.5 (**)
(*) Inflation pressure values for top speed of 180 mph (290 km/h)
(**) Cold inflation pressure values for speed over 180 mph (290 km/h)
NOTE Cold inflation pressures values, considering an increase of +2.9 psi (+0.2 bar) due to tyre heating. This increase does not apply to winter tyres
(smaller size 255/30 ZR20 92W XL), when the car is driven at lower speeds.
Winter tyre suitable for fitting snow chains
Tyres
255/30 ZR20 92W XL (front
and rear) (*)
(*) Small tyre: for safety reasons, limit the speed to 80 mph (130 km/h) on motorways and 55 mph (90 km/h) on extra-urban routes. Set the Alfa DNA™
Pro system to position "a" (Advanced Efficiency) or "n" (Normal). For further details, see the "Alfa DNA™ Pro "System" paragraph in the "Starting and
driving" chapter.
162) If winter tyres with a lower speed rating than that indicated in the Registration Document are used, do not exceed the maximum speed
corresponding to the speed rating of the tyres used.
163) Do not exceed a speed of 100 mph (160 km/h) with winter tyres fitted. In all cases, comply with the laws in force in the Country of use and the
Tyre Manufacturer's recommendations.
216
Rear
30.5 / 2.1 (*)
30.5 / 2.1 (**)
Unladen/medium load (psi / bar)
Front Rear
33.4 / 2.3 30.5 / 2.1
WARNING
Full load (psi / bar)
Front
37.7 / 2.6 (*)
40.7 / 2.8 (**)
Full load (psi / bar)
Front
33.4 / 2.3
Rear
37.7 / 2.6 (*)
37.7 / 2.6 (**)
Rear
34.8 / 2.4