Information
The tire pressure applies only to the tire makes and types approved by Porsche, and is specified for cold
tires (approx. 68° F/20°C ). The tire pressures must never be lower than the specified values.
Standard tire pressure for summer tires + UHP
992 Carrera / 4 / S / 4 S / Turbo S; Coupé / Cabriolet
excluding Coupé with sports chassis and without sliding roof;
excluding Cabriolet sports chassis and C2 Cabriolet GTS;
excluding Coupé with Aerokit

Wheel
size
Part load
FA

RA

Part load
comfort air pressure
up to 270 km/h
(165 mph)

Full load
FA

RA

AfterSales

FA

RA

Full load
comfort air pressure
up to 270 km/h
(165 mph)
FA

RA

May 4, 2020
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4

911 (992)
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Technical Information

48/19

19-inch
wheels

2.2 bar
220 kPa
31 psi

–

2.4 bar
240 kPa
35 psi

–

2.0 bar
200 kPa
29 psi

–

2.3 bar
230 kPa
33 psi

–

20-inch
wheels

–

2.5 bar
250 kPa
36 psi

–

3.0 bar
300 kPa
44 psi

–

2.2 bar
220 kPa
31 psi

–

2.6 bar
260 kPa
37 psi

20-inch
wheels

2.3 bar
230 kPa
33 psi

–

2.5 bar
250 kPa
36 psi

–

2.0 bar
200 kPa
29 psi

–

2.3 bar
230 kPa
33 psi

–

21-inch
wheels

–

2.6 bar
260 kPa
37 psi

–

3.1 bar
310 kPa
44 psi

–

2.2 bar
220 kPa
31 psi

–

2.6 bar
260 kPa
37 psi

20-inch
wheels

2.4 bar
240 kPa
35 psi

–

2.6 bar
260 kPa
37 psi

–

2.1 bar
210 kPa
30 psi

–

2.3 bar
230 kPa
33 psi

–

21-inch
wheels

–

2.9 bar
290 kPa
42 psi

–

3,3 bar
330 kPa
48 psi

–

2.4 bar
240 kPa
35 psi

–

2.7 bar
270 kPa
39 psi

Standard tire pressure for winter tires
992 Carrera / 4 / S / 4 S / Turbo S; Coupé / Cabriolet
excluding Coupé with sports chassis and without sliding roof;
excluding Cabriolet sports chassis and C2 Cabriolet GTS;
excluding Coupé with Aerokit

Wheel
size
Part load
FA

RA

FA

RA

2.2 bar
220 kPa
31 psi

–

2.2 bar
220 kPa
31 psi

–

20-inch
wheels

–

2.2 bar
220 kPa
31 psi

–

2.5 bar
250 kPa
36 psi

20-inch
wheels

2.2 bar
220 kPa
31 psi

–

2.5 bar
250 kPa
36 psi

–

–

2.4 bar
240kPa
35 psi

–

2.9 bar
290 kPa
42 psi

19-inch
wheels

21-inch
wheels

May 4, 2020
Page 10 of 13

Full load

AfterSales

911 (992)

Technical Information

48/19

20-inch
wheels

2.2 bar
220 kPa
31 psi

–

2.5 bar
250 kPa
36 psi

–

21-inch
wheels

–

2.6 bar
260 kPa
37 psi

–

3.0 bar
300 kPa
44 psi

ENU

4400

4

Snow Chains:
WARNING
Incorrectly installed snow chains
•

Uncontrollable vehicle handling



Do not exceed the maximum speed of Speed 30 mph/50 km/h.



Observe installation instructions from the chain manufacturer.
Porsche offers the following snow chains as accessories:
Tire size
295/35 R 20
295/30 R 21

Wheel Storage: •
•
•
•
•
•
•
•

General
Information:

•
•
•
•

Porsche Part No.

Type of snow chain

992.044.690.A

Link-type chain, quick fit

Tires must be stored in a cool, dry and dark room with adequate ventilation.
Tires must never come into contact with fuel, oil, grease or chemicals.
Do not store summer tires in storage areas with ambient temperatures of less than 5° F (-15° C).
Complete wheel & tire assemblies can be stacked for storage; we recommend that you increase the
tire pressure by approximately 6 psi (0.4 bar).
Optimum conditions for storage of the complete wheels are provided by the Original Porsche
storage trolley, Part No. 000.044.000.38.
If the tires are not mounted on wheels, it is best to store them in a vertical position.
We recommend that you turn tires stored in this position every two weeks in order to prevent flat
spots.
Tires that are stacked in a horizontal position will become severely deformed and cannot be seated
properly in the rim flange when they are mounted.
Always use new valves when changing tires.
Always observe any possible instructions concerning the rolling direction and/or specifying which
side the tires must be mounted on.
Coat the tire beads and humps with mounting lubricant before mounting the tire. This ensures that
the tire beads will slide over the humps easily.
In order to prevent the tire from turning on the wheel, avoid extreme driving maneuvers (acceleration
and braking) during the first 100 to 200 miles with new or recently mounted tires.

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Technical Information

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In order to optimize smoothness of rolling, it is appropriate - and necessary in individual cases - to
mount the tire in a certain (favorable) position with respect to the wheel (matching).

Matching (uncontrolled and controlled) is explained below: Uncontrolled matching:
•

Turning the tire on the wheel by 90° or 120° if necessary in order to achieve an acceptable value with
regard to rolling smoothness (true running, imbalance and weight distribution of balance weights).

Controlled matching:
•

•

•

With a balancing machine with matching program. In most cases, this produces aneven better result
with regard to the rolling smoothness (true running, imbalance and weight distribution of the balance
weights) than can be achieved with uncontrolled matching.
Maximum permissible radial runout and lateral runout of the wheels < 0.7 mm. Maximum
permissible radial runout and lateral runout of the wheels with tires < 1.25 mm. Values < 1.50 mm
-ideally approx. 0.5 mm - are desirable.
The mounting pressure (seating pressure) of 58 psi/4.0 bar overpressure must not be exceeded
before both tire beads are evenly seated on the rim flange.

New Tires (Replacements):
•
•
•
•

If new tires are to be mounted or the tires of one axle are to be replaced, tires of the same make,
type and with the same specification code must always be used on each of the two axles.
If tires are replaced on one axle only, the different tread depth from that on the other axle can cause a
noticeable change in the familiar handling.
This is especially the case if new tires are mounted on the rear axle.
This effect decreases with increasing tire mileage.

When replacing a tire on an axle, make sure that the tread depth of the new tire does not differ from that of
the other tire by more than 30 %.
Refer to WM 449503 for specific details of the vehicle you are working on.
•
•

>The 2mm specification will be given here.
> If there is none listed then the default is 30%.

Repairs to Tires:
•

•

If a tire is damaged and it cannot be determined with absolute certainty that there is no ply damage
- with all of its consequences - or if the tire was thermally or mechanically overloaded due to a loss
of pressure or other prior damage, we recommend replacement of the tire in question for safety
reasons.
Repairs on “ZR” tires are not permissible, as is the use of inner tubes in tubeless tires.

Tire Aging:
•
•

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Tires age due to chemical and physical processes, which can impair their function.
Tires that are stored unused for an extended period harden and become brittle faster than tires that
are in continual use.

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Technical Information
•
•
•
•
•

48/19

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Hairline aging cracks can occur on older tires.
On tires in continual use, the kneading action activates the plasticizer in the rubber and thereby
prevents hardening and cracking.
Therefore, attention should be paid not only to the tread depth but also to the age of the tire.
Tires should not be older than 6 years.
The age of the tire can be determined via the DOT code on the sidewall, which indicates the
production date of the tire: e.g. DOT 2201= 22nd week of 2001.

Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training
courses. They are written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special
tools may be necessary in order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the
safe operation of your vehicle, and may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and
safely. Part numbers listed in these bulletins are for reference only. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a
discrepancy, the work procedures in the PIWIS Tester are the ones that must be followed.

© 2020 Porsche Cars North America, Inc.

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May 4, 2020
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