Porsche 911 2020 Owner's Manual page 14

Safety and Driving Pleasure
situation allows you to do so safely. In case of
doubt, stop the vehicle.
e Do not use a phone or other mobile devices while
driving.
e Only make or receive calls using hands-free
equipment.
e Do not reach between the steering-wheel spokes
while driving. Otherwise, you may not be able to
react in time to dangerous situations in time.
Be aware of braking behavior in rain or snow
In heavy rain, while driving through water or after
leaving a car wash, the brake disks are coated with a
water film, the braking action may be delayed and
increased pressure may be required.
Following a long drive over salted or gritted roads, a
coating may form on the brake disks and pads that
significantly reduces friction and therefore also the
braking action.
e Dry the brakes by frequent braking, particularly
before you park the vehicle. This will prevent
corrosion.
e Corroded brakes tend to "judder". If braking
comfort is noticeably impaired, have the brake
system checked.
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Suitable tires and appropriate driving style
> Please see chapter "Wheels and Tires" on
page 300.
Reacting correctly to uneven running and vibration
Damage to tires or the vehicle can cause uneven
running or vibration while driving. You may lose
control of the vehicle.
e Reduce speed immediately, but without braking
sharply.
e Stop the vehicle and inspect the tires. If a cause
cannot be established for the fault, drive on
carefully and have the fault corrected. Visit an
authorized Porsche dealer, as they have trained
technicians and the necessary parts and tools.
Keeping tires in a safe condition
Damaged tires can burst, especially at high speeds.
Prevent damage to the tires by driving carefully.
e Cross curb edges slowly and at right angles if
possible.
e Avoid driving over steep or sharp curbs.
Running in new tires
New tires have not yet achieved their maximum grip
and tend to slip.
e Run in new tires at a moderate speed for the first
125 miles (200 km).
Driving with snow tires
Maximum speed values apply for snow tires. If you
exceed the maximum permitted speed, the tires may
burst.
e Always observe the maximum permitted speed
for the respective tire.
e Affix the sticker with the maximum permitted
speed in the driver's field of vision. Observe
country-specific regulations.
e Set the maximum permitted speed as the speed
limit using the instrument cluster.
> Please see chapter "Instrument Cluster" on
page 138.
Driving with summer tires
Parking or maneuvering at outside temperatures
below 60 °F (15 °C) may result in noises.
e Change to snow tires when outside temperatures
are below 45 °F (7 °C).
Assistance systems and their limits
Your Porsche is equipped with driver assistance
systems for driving comfort.
None of these systems can overcome the limits set
by the laws of driving physics.
e These systems should not induce you to take
greater risks with your safety. The driver