tire size Alfa Romeo 4C 2021 Instructieboek (in Dutch)

TECHNICAL DATA
124
COLD TYRE INFLATION PRESSURE (bar)
Tyres provided Inflation pressure (bar)
Front tyres 205/45 R17 88Y XL 1.8 205/40 R18 86Y XL 1.8
Rear tyres 235/40 R18 95Y XL 2.0 235/35 R19 91Y XL 2.0
When the tires are warm, the inflation pressure should be + 0.3 bar in relation to the recommended figure.
However, recheck that the value is correct with the tyre cold.
With snow tyres, add +0.2 bar to the pressure value prescribed for standard tyres.
If it is necessary to raise the vehicle, refer to the “Raising the vehicle” paragraph in the “Servicing and care” chapter.
SNOW TYRES
Use snow tyres of the same size as the normal tyres provided with the car: the dedicated Alfa Romeo Dealership will be able to advise
you on the most appropriate tyre to use.
Only use these tyres in the event of ice or snow on the roads.
In these conditions it is recommended to select the “All Weather” mode of the Alfa DNA system.
For the type of snow tyre to be used, inflation pressures and the specifications of the tyres, carefully follow the instructions given in
this paragraph.
134)
The performance of these tyres on low-grip surfaces are reduced considerably when the tread depth is below 4 mm. Replace them in
this case.
Due to the specific characteristics of snow tyres, in normal weather conditions and dry asphalt or on long motorway journeys, the
performance of these tyres is lower than that of standard tyres.
Their usage should therefore be restricted in accordance with their type approval.