NHTSA ID Number: 10165157
Manufacturer Communication Number: 122-A6Z6M-09
TSB/Document Date: 2019-09-23
Summary
List of approved wheel and tire combinations for the MY18 and MY19 Porsche
911 GT2RS, GT3RS, and 911 Speedster models.
911 (991)
Technical Information
10/19
ENU
4400
4
Approved Wheels and Tires (10/19)
Revision:
This bulletin replaces bulletin, Group 4, #20/18, dated November 19, 2018.
Model Year:
As of 2018 up to 2019
Vehicle Type:
911 GT2 RS (991 II)/GT3 RS (991 II)/GT Speedster
Approval
Status:
July, 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 have 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/GT3 RS
FA: 265/35 ZR 20 (99Y) XL
RA: 325/30 ZR 21 (108Y) XL
Michelin Pilot Sport Cup 2 N2
(Inside/Outside)
Michelin Pilot Sport Cup 2 R N0
(Inside/Outside)
Dunlop Sport Maxx Race 2 N1
(Inside/Outside)
AfterSales
Aug 28, 2019
Page 1 of 8
4
911 (991)
4400
ENU
Technical Information
10/19
Model
Tire size
Tire make and type
911
GT3/Touring/GT
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/GT3 RS
FA: 245/35 R 20 91V M+S
RA: 315/35 R 20 110V XL M+S
Michelin Pilot Alpin 4 N1
(Rotation)
911
GT3/Touring/GT
Speedster
FA: 245/35 R 20 91V M+S
RA: 295/30 R 20 97V/101V XL
M+S
Michelin Pilot Alpin 4 N1
(Rotation)
Pirelli Winter 240 Sottozero Series II N0
(Rotation)
Information
"N..." = Specification code of the tyre, e.g. "N0", "N1", "N2" ... The complete “N ...” code of the tyres in
question must be shown on the tyre sidewall near the tyre type designation.
Instructions for correct mounting of the tyres are also given on the tyre sidewall. If there are no mounting
instructions on the tyre sidewall, the tyre must be mounted so that the DOT marking is visible from the
outside.
Aug 28, 2019
Page 2 of 8
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
AfterSales
911 (991)
Technical Information
10/19
ENU
4400
4
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.
Standard tire pressure
911 GT2 RS
Standard tire pressure
Front axle
Rear axle
Performance tire pressure
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/allseason tires
2.3 bar
(33 psi)
2.5 bar
(36 psi)
AfterSales
2.3 bar
(33 psi)
2.5 bar
(36 psi)
Aug 28, 2019
Page 3 of 8
4
911 (991)
4400
ENU
Technical Information
10/19
Standard tire pressure
911 GT3 RS
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TSB/Document ID: 122-A6Z6M-09
Replacement Service Bulletin Number:
MFR Communication Date: 2019-08-28
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: WHEELS
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
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