NHTSA ID Number: 10202063
Manufacturer Communication Number: No. 67-21
TSB/Document Date: 2021-10-06
Summary
List of approved wheels, tires, and spacers for the 987 Boxster and Cayman.
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TSB/Document ID: No. 67-21
Replacement Service Bulletin Number:
MFR Communication Date: 2021-09-15
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: WHEELS
MFR Component System:
MFR Component Subsystem:
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Freigabe/Approval
Manufacturer's Certificate
67/21
ENU
4440
4
Approved Summer Tires, Wheels and Spacers (67/21)
Information
This Manufacturer Approval list replaces Manufacturer Approval, Group 4, #14/09 dated April 15, 2010.
Vehicle Type:
Boxster (987) / Boxster S (987)
Cayman (987) / Cayman S (987)
Model Year:
As of 2005 up to 2008
Information:
Current approval status: August 2021
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.
Makes/Types:
The tire makes and types shown in bold in the table below are approved tires for vehicles as of model
year 2009. We recommend that you use these tires when installing new tires.
Dimension
Make and type /
Comments
Label value (Link to EU database)
Continental
SportContact 2 N0
(Inside/Outside)
FA/RA: Label value not available
Continental SportContact 3 N1
(Inside/Outside)
205/55 ZR 17
91Y
235/50 ZR 17
96Y
FA/RA: Label value not available
Continental SportContact 3 N2
(Inside/Outside)
Only for
Boxster/Cayman
FA/RA: Label value not available
Michelin Pilot Sport 2 N1
(Inside/Outside)
FA/RA: Label value not available
Goodyear Eagle F1 Asymmetric N0
AfterSales
Sep 15, 2021
Page 1 of 14
4
Freigabe/Approval
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ENU
Manufacturer's Certificate
67/21
Dimension
Make and type /
Comments
Label value (Link to EU database)
(Inside/Outside)
FA: https://eprel.ec.europa.eu/qr/530991
RA: https://eprel.ec.europa.eu/qr/530182
Bridgestone Potenza RE050A N0
(Inside/Outside)
FA/RA: Label value not available
Bridgestone Potenza RE050A N1
(Inside/Outside)
FA/RA: Label value not available
235/40 ZR 18
(91Y)
265/40 ZR 18
(101Y) XL
Continental SportContact 2 N0
(Inside/Outside)
FA/RA: Label value not available
Continental SportContact 3 N1
(Inside/Outside)
For Boxster/Cayman
and Boxster S/Cayman
S
FA/RA: Label value not available
Michelin Pilot Sport 2 N3
(Inside/Outside)
FA/RA: Label value not available
Michelin Pilot Sport 2 N4
(Inside/Outside)
FA/RA: Label value not available
Bridgestone Potenza RE050A N0
(Inside/Outside)
FA/RA: Label value not available
235/35 ZR 19
(87Y)
265/35 ZR 19
(94Y)
Bridgestone Potenza RE050A N1
(Inside/Outside)
FA/RA: Label value not available
Continental SportContact 2 N0
(Inside/Outside)
FA/RA: Label value not available
Continental SportContact 3 N1
(Inside/Outside)
Sep 15, 2021
Page 2 of 14
AfterSales
For Boxster/Cayman
and Boxster S/Cayman
S
Freigabe/Approval
Manufacturer's Certificate
Dimension
67/21
Make and type /
ENU
4440
4
Comments
Label value (Link to EU database)
FA/RA: Label value not available
Michelin Pilot Sport 2 N1
(Inside/Outside)
FA/RA: Label value not available
Michelin Pilot Sport 2 N2
(Inside/Outside)
FA/RA: Label value not available
Goodyear Eagle F1 Asymmetric N0
(Inside/Outside)
FA: https://eprel.ec.europa.eu/qr/530195
RA: https://eprel.ec.europa.eu/qr/530181
Pirelli P-Zero N2
(Inside/Outside)
FA: https://eprel.ec.europa.eu/qr/594212
RA: https://eprel.ec.europa.eu/qr/594234
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
= mounting on specified side only.
Arrow with both inscriptions “Rotation” and
“Inside/Outside”
= directional mounting on specified side only.
AfterSales
Sep 15, 2021
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ENU
Manufacturer's Certificate
67/21
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 new rubber valves at every tire change.
Use only tires approved by Porsche.
Tire Pressure:
Wheel size
FA
RA
17-inch wheels
2.0 bar (29 psi)
2.5 bar (36 psi)
18-inch wheels
2.0 bar (29 psi)
2.5 bar (36 psi)
19-inch wheels
2.2 bar
2.5 bar (36 psi)
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.
Sizes:
Sep 15, 2021
Page 4 of 14
Permissible summer tire and wheel sizes (RO = rim offset in mm).
AfterSales
Freigabe/Approval
Manufacturer's Certificate
Sizes:
67/21
ENU
4440
4
Permissible summer tire and wheel sizes (RO = rim offset in mm).
1
Comments
Front: 205/55 ZR 17 91Y
Rear: 235/50 ZR 17 96Y
6,5 J x 17, RO 55
8 J x 17, RO 40
Only for Boxster/Cayman
Front: 205/55 ZR 17 91Y
Rear: 235/50 ZR 17 96Y
6,5 J x 17, RO 55
8 J x 17, RO 40
Only for Boxster/Cayman,
5-mm spacer, Part No.
997.361.605.90, permitted per
wheel,
snow chains cannot be installed.
Front: 235/40 ZR 18 (91Y)
Rear: 265/40 ZR 18 (101Y) XL
8 J x 18, RO 57
9 J x 18, RO 43
For Boxster/Cayman and Boxster
S/Cayman S,
snow chains cannot be installed.
Front: 235/40 ZR 18 (91Y)
Rear: 265/40 ZR 18 (101Y) XL
8 J x 18, RO 57
9 J x 18, RO 43
For Boxster/Cayman and Boxster
S/Cayman S,
5-mm spacer, Part No.
997.361.605.90, permitted per
wheel,
snow chains cannot be installed.
Front: 235/35 ZR 19 (87Y)
Rear: 265/35 ZR 19 (94Y)
8 J x 19, RO 57
9,5 J x 19, RO 46
For Boxster/Cayman and Boxster
S/Cayman S,
snow chains cannot be installed.
Front: 235/35 ZR 19 (87Y)
Rear: 265/35 ZR 19 (94Y)
8 J x 19, RO 57
9,5 J x 19, RO 46
For Boxster/Cayman and Boxster
S/Cayman S,
5-mm spacer, Part No.
997.361.605.90, permitted per
wheel,
snow chains cannot be installed.
Front: 235/35 ZR 19 (87Y)
Rear: 265/35 ZR 19 (94Y)
8.5 J x 19, RO 55 1
10 J x 19, RO 42 1
For Boxster/Cayman and Boxster
S/Cayman S,
snow chains cannot be installed.
Only with Bridgestone Potenza RE050A N0/N1, Michelin Pilot Sport 2 N1 tires
AfterSales
Sep 15, 2021
Page 5 of 14
4
Freigabe/Approval
4440
Subsequent
installation of
spacers
ENU
Manufacturer's Certificate
67/21
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