Porsche 911 Manual page 286

Technical Data
> Please refer to chapter "Tyre Pressure Monitoring (TPM)" on page 238.
e Refer to the tyre pressure plate and the Tyre Pressure Monitoring (TPM) display in the PCM.
e CONTROL
– CAR
e Adapt the tyre pressure according to specifications.
The "Comfort pressure" option is country-dependent and is not available for all countries.
Driving at high speed and low tyre pressure destroys the tyres.
e Only set comfort pressure in the tyres on vehicles with "Comfort pressure" option.
Spare wheel
> Please refer to chapter "Using the collapsible spare wheel" on page 111.
Wheel and tyre size
Tyre type
Collapsible spare wheel
FA = front axle, RA = rear axle, RO = rim offset
Tyre pressure
All tyre pressures apply only to the tyre makes and types approved by Porsche for cold tyres (20 °C).
Collapsible spare wheel
284
e Vehicle e Tyre pressure monitoring e Pressure deviation
WARNING
Tyre size
T 185/55-20 100P
3.5 bar / 350 kPa / 51 psi
Low tyre pressure
Wheel size
6B x 20, RO 21
FA
Fitting snow chains
No
RA
3.5 bar / 350 kPa / 51 psi