911 (991)

Technical Information

54/19

ENU

4400

4

Approved Wheels and Tires (54/19)

Vehicle Type:

991 II: 911 GT2 RS/911 GT3 RS/911 GT3/911 Speedster

Model Year:

As of 2018

Approval
status:

December 2019

WARNING
Driving with different tires (mixed tires)
•

Uncontrollable vehicle handling



Only use tires of the same make and type, with the same speed index and the same specification code
(N0, N1, N2, ...) on a vehicle. Exception: A mixed installation is permitted for the winter tires Michelin Pilot
Alpin 4 N1/N0.
WARNING

Driving with sports tires
•

Aquaplaning on wet or muddy roads



Reduce speed.



Drive according to the road conditions.

Summer tires:

The 911 GT2 RS/GT3 RS vehicles are fitted as standard with sports tires that were developed specifically
for motor sports.
(FA = front axle, RA = rear axle)
Model

tire size

tire make and type

911 GT2 RS/911
GT3 RS

FA: 265/35 ZR 20 (99Y) XL
RA: 325/30 ZR 21 (108Y) XL

Michelin Pilot Sport Cup 2 N2
(Inside/Outside)
Not for Japan
Michelin Pilot Sport Cup 2 R N0
(Inside/Outside)
Not for: Japan, South Korea, Brazil,
India.
Ultra High Performance tires, such
as Michelin Pilot Sport Cup 2 R, must

AfterSales

Feb 25, 2020
Page 1 of 12

4

911 (991)
4400

ENU

Technical Information

54/19

Model

tire size

tire make and type
only be inflated with the tire pressures
intended for this tire type. When
handing over the tire, always give the
customer the customer information
provided by the manufacturer. The
customer information provided by
the manufacturer is available on the
manufacturer's website.
Dunlop Sport Maxx Race 2 N1
(Inside/Outside)
Goodyear Eagle F1 Super Sport RS N0
Not for: Japan, South Korea, Brazil,
India

911 GT3/911
Speedster

FA: 245/35 ZR 20 (95Y) XL
RA: 305/30 ZR 20 (103Y) XL

Michelin Pilot Sport Cup 2 N1
(Inside/Outside)
Michelin Pilot Sport 4S N0
(Inside/Outside)
Dunlop Sport Maxx Race 2 N1
(Inside/Outside)

Information
Sports tires (Ultra High Performance Tires) are permitted on public roads and satisfy all legal
requirements and road safety criteria.
These tires are also designed for use on racing circuits (driving safety training courses, sports driving
schools, Clubsport events) and offer distinct advantages with regard to dry adhesion and wear-and-tear
compared to normal road tires.
The main features are a reduced tread depth as well as a special thread design and substructure.

Winter tires:

Model

tire sizes

tire make and type

911 GT2 RS/911
GT3 RS

FA: 245/35 R 20 91V M+S

Michelin Pilot Alpin 4 N1
(Rotation)

RA: 315/35 R 20 110V XL M+S

Michelin Pilot Alpin 4 N0
(Rotation)

FA: 245/35 R 20 91V M+S
RA: 295/30 R 20 97V/101V XL
M+S

Michelin Pilot Alpin 4 N1
(Rotation)

911 GT3/911
Speedster

Feb 25, 2020
Page 2 of 12

AfterSales

Pirelli Winter 240 Sottozero Series II N0
(Rotation)

911 (991)

Technical Information

54/19

ENU

4400

4

Information
"N..." = Specification code of the tire, e.g. "N0", "N1", "N2" ... The complete “N ...” code of the tires in
question must be shown on the tire sidewall near the tire type designation.
Instructions for correct mounting of the tires are also given on the tire sidewall. If there are no mounting
instructions on the tire sidewall, the tire must be mounted so that the DOT marking is visible from the
outside.
Arrow with inscription "Rotation"

= directional mounting

“Inside/Outside” inscription or “Left” or “Right”

= mounting on specified side only

Arrow with both inscriptions "Rotation" and
"Inside/Outside"

= directional mounting and mounting on specified
side only

Arrow with both inscriptions “Rotation” and “Left”
or “Right”

= directional mounting and mounting on specified
side only

Information
If a tire is damaged and it is not possible to determine with absolute certainty that there is no ply damage
- with all of its consequences - or if the tire was thermally and/or mechanically overloaded due to a loss of
pressure or other prior damage, replace the tire in question for safety reasons.
Repairs to "V", "W", "Y" and "ZR" tires are not permissable, as well as the use of inner tubes in tubeless
tires. Please inform your customers accordingly. It is advisable to mount winter tires at temperatures
below 45° F/7°C , because the driving characteristics of summer tires are reduced at low temperatures.
Extremely low temperatures can cause permanent damage to summer tires.
WARNING
Incorrect tire pressure
•

Uncontrollable vehicle handling



Adjust the tire pressure according to specifications. Never allow the pressure to fall below the minimum
pressure.



Check age of tires. Replace tires that are more than 6 years old.



Perform visual inspections.



Use only tires recommended by Porsche.

Tire Pressure:
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.

AfterSales

Feb 25, 2020
Page 3 of 12

4

911 (991)
4400

ENU

Technical Information

54/19

Standard tire pressure
911 GT2 RS

Front axle

Rear axle

Front axle

20-inch summer
tires

2.4 bar
(35 psi)

2.0 bar
(29 psi)

20-inch summer
tires Cup 2R

2.5 bar
(36 psi)

2.2 bar
(32 psi)

Rear axle

21-inch summer
tires

2.7 bar
(39 psi)

2.3 bar
(33 psi)

21-inch summer
tires Cup 2R

2.8 bar
(41 psi)

2.5 bar
(36 psi)

20-inch winter
tires

2.3 bar
(33 psi)

911 GT3 RS

2.5 bar
(36 psi)

2.3 bar
(33 psi)

2.5 bar
(36 psi)

Standard tire pressure
Front axle

20-inch summer tires

2.0 bar
(29 psi)

20-inch summer tires
Cup 2R

2.2 bar
(32 psi)

Rear axle

21-inch summer tires

2.3 bar
(33 psi)

21-inch summer tires
Cup 2R

2.5 bar
(36 psi)

20-inch winter tires

911 GT3/911 Speedster

Feb 25, 2020
Page 4 of 12

Performance tire pressure

Standard tire pressure

2.3 bar
(33 psi)

2.5 bar
(36 psi)
Standard tire pressure

Front axle

Rear axle

20-inch summer tires

2.0 bar
(29 psi)

2.3 bar
(33 psi)

20-inch winter tires

2.3 bar
(33 psi)

2.5 bar
(36 psi)

AfterSales

911 (991)

Technical Information
Sizes:

54/19

ENU

4400

4

Permissible wheel and tire sizes
(RO = rim offset in mm, FA = front axle, RA = rear axle)

tires