Tires approved by Porsche

Contributed by: Ray Calvo

(Note:  much of this information was obtained from the 1995 and 1996 Porsche Service Bulletins and the March '98 issue of "Christophorus")

I don't know if you are aware of it, but Porsche does extensive testing on the tires that go on their cars.  This involves high speed testing at either the Nurburgring or Mugello race tracks, plus lab testing of maximum speed, wet traction, wear, and noise.  For information, when a tire is approved by Porsche, it then will receive what I characterize as an "N" stamp, such as "N0", "N1", "N2", etc.  Only tires approved by Porsche will receive these ratings.  There is no real difference between an N0 or N1 rating; this simply means that when a manufacturer makes a change to a tire and Porsche re-tests it, the new rating for that tire changes from N0 to N1, for example.

From the above sources, the following are the list of Porsche-approved tires with the "N" specification.
 
Bridgestone Expedia S-01 
N0, N1, N2
Bridgestone S-02 
N2 or N3
Continental Sport Contact 
N0 or N1
Dunlop SP Sport 8000
N0
Goodyear Eagle GSD 
N2
Michelin MXX3 Pilot SX
N0, N1, N2
Michelin Pilot Sport SX 
N0
Pirelli PZero 
N0 or N1
Pirelli PZero Direzionale 
N2 or N3
Pirelli PZero Asimmetrico
N2 or N3
Pirelli P700-Z 
N0 or N1
Toyo Proxes F1 S 
N0
Yokohama A-008P
N0 or N1
Yokohama AVS S-1Z 
N1

The following is a factory-original rim and tire size summary for various Porsche models:
 
 
Rim Size 
 Offset 
Tire Size
(F = Front R = Rear)
(mm)
 
928GTS
   
7 1/2 X 17   F
65.0 
225/45 X 17
9 X 17         R
55.0 
255/40 X 17
968
   
7 X 16          F 
52.3, 55.0 
205/55 X 16
8 X 16          R 
52.3, 52.0 
225/50 X 16
7 1/2 X 17   F 
 65.0
 225/45 X 17
 8 X 17          F 
 52.0
 225/45 X 17
 9 X 17          R 
 55.0 
 255/40 X 17
 9 1/2 X 17   R(1) 
 68.0 
  255/40 X 17
(1) - requires 17mm spacing ring and longer wheel studs    
'89 - '94 Carrera 2 and 4, RS America, Speedster
   
6 X 16          F 
  52.3 
 205/55 X 16
7 X 16          F 
 55.0 
 205/55 X 16
8 X 16          R 
52.3 
 225/50 X 16
9 X 16          R 
 52.3
 245/45 X 16
7 X 17          F(2) 
  55.0 
 205/50 X 17
8 X 17          R 
  52.0
 255/40 X 17
8 X 17          F(3) 
 52.0 
 225/45 X 17
9 X 17          R 
 55.0 
255/40 X 17
9 1/2 X 17   R(1) 
 68.0
 275/35 X 17
(1) - requires 17mm spacing ring and longer wheel studs
(2) - requires new stop washers in steering rack
(3) - America Speedster only
   
'91 and '92 911 Turbo
   
7 X 17       F 
 55.0 
 205/50 X 17
9 X 17       R 
 55.0
 255/40 X 17
993, C2S, C4S, Twin Turbo
   
7 X 16       F 
 55.0 
 205/55 X 16
9 X 16       R 
 70.0 
 245/45 X 16
7 X 17       F 
 55.0
 205/50 X 17
9 X 17       R 
 55.0 
  255/40 X 17
8 X 18       F(1) 
 52.0 
 225/40 X 18
10 X 18      R 
 65.0 
 265/35 X 18
10 X 18      R 
 40.0 
 285/30 X 18
(1) - Requires steering rack support bracket on '95 and '96 993. 18" wheels not approved for mounting on '95 cars before chassis 99_7_SS_323614.    
Boxster
 
 
6 X 16          F 
 50.0 
 205/55 X 16
7 X 16          R 
 40.0 
 225/50 X 16
7 X 17          F 
 55.0 
 205/50 X 17
8 1/2 X 17   R
 50.0
 255/40 X 17
7 1/2 X 18   F 
 52.0 
 225/40 X 18
9 X 18          R 
 52.0 
 265/35 X 18
996
   
7 X 17          F 
 55.0 
 205/50 X 17
 9 X 17          R 
 55.0
 255/40 X 17
7 1/2 X 18   F 
 50.0 
 225/40 X 18
10 X 18        R 
 65.0
265/35 X 17


Updated tire information by webmaster on Nov/2000
When printing this information out please select "Landscape" paper orientation at your printer setting

Year 2000 updated tire information

Approved summer tire manufacturers beginning model year 2000

Wheel size
Manufacturer
Trade name
Specification
Abbreviations
Short description
16"
Bridgestone
S-O2
N3
B3
All-around
 
Continental
SportContact
N1
C1
Comfort
 
Michelin
MXX3 Pilot SX
N2
M2
Sports
 
Pirelli
PZero Direzionale*
N3
P3
Sports
 
Pirelli
PZero Asimmetrico**
N3
P3
 
 
Yokohama
AVS S-1Z
N1
Y1
Comfort
17"
Bridgestone
S-O2A***
N4
(B4)
 
 
Continental
SportContact
N1
C1
Comfort
 
Michelin
MXX3 Pilot SX
N1
M1
Sports
 
Pirelli
PZero Direzionale*
N2
P2
Sports
 
Pirelli 
PZero Asimmetrico**
N2
P2
 
18"
Bridgestone
S-O2
N2
B2
Sports
 
Bridgestone
S-O2A***
N3
(B3)
 
 
Continental
SportContact
N1
C1
Comfort
 
Dunlop
SP Sport 9090
N0
D0
All-around
 
Michelin
Pilot Sport SX
N0
M0
Sports
 
Pirelli
PZero Asimmetrico
N2
P2
Sports
 
Pirelli
PZero Asimmetrico
N3
P3
Sports
*only for front axle **only for rear axle ***release in preparation
Only one manufacturer and one specification no. (N1;N2;....) may be mounted to vehicle;otherwise, driving performance can vary significantly.

Summer wheel/tire combinations beginning model year 2000

Wheel
 
Tire dimensions
Boxster*
Boxster S
911 Carrera/4 
911 Cabrio/4
911 Carrera 
911 Cabrio
Exc/Teq wide tires
911 Carrera 4 
911 Cabrio 4 
Exc/Teq wide tires
911 Carrera 
911 Cabrio 
Exc/Teq wide tires
320hp(235kW)
911 Carrera 4
911 Cabrio 4
Exc/Teq wide tires
320hp(235kW)
911 GT3
911 Turbo
Dimensions
Offset
                   
6JX16
50
205/55ZR16
B3;C1M2;P3;Y1
               
7JX16
40
225/50ZR16
B3;C1M2;P3;Y1
               
7JX17
55
205/50ZR17
(B4);C1;M1;P2
(B4);C1;M1;P2
(B4);C1;M1
   
(B4);C1
(B4);C1
   
8.5JX17
50
255/40ZR17
(B4);C1;M1;P2
(B4);C1;M1;P2
             
9JX17
55
255/40ZR17
   
(B4);C1;M1
   
(B4);C1
(B4);C1
   
7.5JX18
50
225/40ZR18
C1;D0;P3
C1;D0;P3
C1;D0;P3
   
C1;D0**
C1;D0**
   
8JX18
52
225/40ZR18
     
C1;M0;P2;P3
C1;M0;P2
C1;M0;P2;P3***
C1;M0;P2***
B2;M0;P3
 
8JX18
50
225/40ZR18
               
(B3);P3
9JX18
52
265/35ZR18
C1;D0;P3
C1;D0;P3
             
10JX18
65
265/35ZR18
   
C1;D0;P3
   
C1;D0**
C1;D0**
   
10JX18
65
285/30ZR18
     
C1;M0;P2;P3
C1;M0;P2
C1;M0;P2;P3***
C1;M0;P2***
B2;M0;P3
 
11JX18
45
295/30ZR18
               
(B3);P3
* 18 inches approved for Boxster only for '98 models or later;  **combination 1; *** combination 2 
"(B3)" and "(B4)" (in italics): releasr in preparation
Corresponding tires: see column "abbreviations" under table "Approved summer tire manufacturers beginning model year 2000"

Year 1999 updated tire information

Approved summer tire manufacturers beginning model year '99

Wheel size
Manufacturer
Trade name
Specification
Abbreviations
Short description
16 inches
Bridgestone
S-O2
N3
B3
All-around
 
Continental
SportContact
N1
C1
Comfort
 
Michelin
MXX3 Pilot SX
N2
M2
Sports
 
Pirelli
PZero Direzionale*)
N3
P3
Sports
   
PZero Asimmetrico**)
N3
P3
 
 
Yokohama
AVS S-1Z
N1
Y1
Comfort
17 inches
Bridgestone
S-O2
N3
B3
All-around
 
Continental
SportContact
N1
C1
Comfort
 
Michelin
MXX3 Pilot SX
N1
M1
Sports
 
Pirelli
PZero Direzionale*)
N2
P2
Sports
   
PZero Asimmetrico**)
N2
P2
 
18 inches
Bridgestone
S-O2
N2
B2
Sports
 
Continental
SportContact
N1
C1
Comfort
 
Michelin
Pilot Sport SX
N0
(M0)
release in preparation
 
Pirelli
PZero Asimmetrico
N3
P3
Sports
*) only for front axle
**) only for rear axle
Only one manufacturer and one specification no. (N1;N2;...) maybe mounted to vehicle; otherwise driving performance can vary significantly.

Summer wheel/tire combinations beginning model year '99

Wheel
 
Tire 
dimensions
Boxster *) 
(986)
911 Carrera
911 Cabrio
(996)
911 Carrera 4
911 Cabrio 4
(996)
911 Carrera 
Exclusive
(320PS) (996)
911 Carerra 4
Exclusive
(320PS) (996)
911 GT3
(996)
Dimensions
Offset
             
6JX16
50
205/55 ZR16
B3;C1;M2;P3;Y1
         
7JX16
40
225/50 ZR16
B3;C1;M2;P3;Y1
         
7JX17
55
205/50 ZR17
B3;C1;M1;P2
B3;C1;M1;P2
C1;M1;P2
B3;C1;P2
C1;P2
 
8.5JX17
50
255/40 ZR17
B3;C1;M1;P2
         
9JX17
55
255/40 ZR17
 
B3;C1;M1;P2
C1;M1;P2
     
7.5JX18
50
225/40 ZR18
C1;P3
C1;P3
C1;P3
C1
C1
 
8JX18
52
225/40 ZR18
         
B2;(M0);P3
9JX18
52
265/35 ZR18
C1;P3
         
10JX18
65
265/35 ZR18
 
C1;P3
C1;P3
C1
C1
 
10JX18
65
285/30 ZR18
         
B2;(M0);P3
*) 19 inches approved for Boxster only for '98 models or later
(M0): release in preparation
Corresponding tires: see column "abbreviations" under table "Approved summer tire manufacturers beginning model year '99"

Year 1998 updated tire information

Approved summer tire manufacturers beginning model year '98

Wheel size
Manufacturer
Trade name
Specification
Abbreviations
16 inches
Bridgestone
S-O2
N3
B3
 
Continental
SportContact
N1
C1
 
Michelin
MXX3 Pilot SX
N2
M2
 
Pirelli
PZero Direzionale )*
N3
(P3)
 
Pirelli
PZero Asimmetrico )**
N3
(P3)
 
Toyo
Proxes F1 S
N0
T0
 
Yokohama
AVS S-1Z
N1
Y1
17 inches
Bridgestone
S-O2
N3
B3
 
Continental
SportContact
N1
C1
 
Dunlop
SP Sport 8000
N0
D0
 
Michelin
MXX3 Pilot SX
N1
M1
 
Pirelli
PZero Direcionale )*
N2
P2
   
PZero Asimmetrico)**
N2
P2
 
Toyo
Proxes F1 S
N0
T0
18 inches
Bridgestone
S-O2
N2
B2
 
Continental
SportContact
N1
C1
 
Michelin
Pilot Sport SX
N0
(M0)
 
Pirelli
PZero Asimmetrico
N2
P2
 
Pirelli
PZero Asimmetrico
N3
(P3)
)* only for front axle/ )** only for rear axle  italicized: in preparation
Only one manufacturer and one specification no. (N1;N2;...) maybe mounted to vehicle; otherwise driving performance can vary significantly.

Summer wheel/tire combinations beginning model year '98

Wheel
 
Tire
dimensions
Boxster )* 
(986)
911 Carrera
911 Carrera 4
911 Cabrio
(993)
911 Targa
(993)
911 Carrera S )**
(993)
911 Carrera 4S
911 Turbo
(993)
911 Carerra
(996)
Dimensions
Offset
             
6JX16
50
205/55 ZR16
B3;C1;M2;(P3);Y1
         
7JX16
40
225/50 ZR16
B3;C1;M2;(P3);Y1
         
7JX16
55
205/50 ZR16
 
B3;C1;M2;(P3);T0
       
9JX16
70
245/45 ZR16
 
B3;C1;M2;(P3);T0
       
7JX17
55
205/50 ZR17
B3;C1;M1;P2
B3;C1;D0;M1;P2;T0
B3;C1;D0;M1;P2;T0
B3;C1;D0;M1;P2;T0
 
B3;C1;M1;P2
8.5JX17
50
255/40 ZR17
B3;C1;M1;P2
         
9JX17
55
255/40 ZR17
 
B3;C1;D0;M1;P2;T0
B3;C1;D0;M1;P2;T0
B3;C1;D0;M1;P2;T0
 
B3;C1;M1;P2
7.5JX18
50
225/40 ZR18
C1;(M0);P2;(P3)
       
C1;(M0);(P3)
8JX18
52
225/40 ZR18
 
C1;(M0);P2;(P3)
 
B2;P2
B2;P2
 
9JX18
52
265/35 ZR18
C1;(M0);P2;(P3)
         
10JX18
65
265/35 ZR18
 
C1;(M0);P2;(P3)
     
C1;(M0);(P3)
10JX18
40
285/30 ZR18
B2;P2
B2;P2
)* 19 inches approved for Boxster only for '98 models or later
)** 17 inches only in combination with 31 mm spacer ring on the rear axle
Corresponding tires: see column "Table abbreviations" under table "Approved summer tire manufacturers beginning model year '98"

p-car.com
Web master