Maserati GRANCABRIO Owner's Manual page 220

Wheels
Wheel rims and tyres
front
rear
(°) Rims and tyres available on request.
Alternatively, you may use winter tyres having the same dimensions as those provided with the vehicle.
WARNING: While respecting the specifi ed sizes, for the safe operation of the vehicle it is also essential that it is equipped
with the same brand and type of tyres on all wheels.
WARNING: Do not use an inner tube with Tubeless tyres.
Compact spare wheel (optional)
Alloy wheel rim.
7
Rim size
6"J x 18"
218
Rim size
8.5"J x 20"
8.5"J x 19" (°)
10.5"J x 20"
10.5"J x 19" (°)
Tyre dimension
175/55 R18
Tyre size
245/35 ZR20
245/40 ZR19 (°)
285/35 ZR20
285/40 ZR19 (°)
Tyre brand
VREDESTEIN
Winter tyres
245/35 ZR20
245/40 ZR19 (°)
285/35 ZR20
285/40 ZR19 (°)
Infl ation pressure
when cool - bar (psi)
3,5 (50.8)