Tires/Wheels - Approved Summer Tires/Spacers/Wheels
4911 (997)
19/08 ENU 4440
Aug 27, 2009
Approved Summer Tires,Wheels and Spacers
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.
Filing:
This bulletin replace bulletin, Group 4, #19/08, dated June 23, 2008.
Model Year:
As of 2009
Vehicle Type:
911 Carrera 4 (997)/911 Carrera 4S (997)/911 Carrera 4 Cabriolet (997)/911 Carrera 4S Cabriolet (997)/911 Targa 4 (997)/911 Targa 4S (997)
INFORMATION:
Currently approved wheels and tires - September 2008.
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:
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 = directional mounting on
"Rotation" and "Inside/Outside" specified side only.
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:
Driving with sports tires
- Aquaplaning on wet or muddy roads
- Reduce speed.
- Drive according to the road conditions.
UHP Tires:
Arrow with inscription "Rotation" = directional mounting.
"Inside/Outside" inscription = mounting on specified side only.
Arrow with both inscriptions = directional mounting on
"Rotation" and "Inside/Outside" specified side only.
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.
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 recommended by Porsche.
Tire Pressure:
Sizes:
Permissible summer tire and wheel sizes (RO = rim offset in mm)
Subsequent installation of spacers
Securing spacers and wheels
The 5-mm spacers are secured on the wheel hubs together with the brake discs using countersunk screws (M6 x 16), Part No. 900.269.106.09.
Tightening torque 10 Nm(7.5 ftlb.)
The 5-mm spacer must remain on the vehicle when mounting the spare wheel.
If 5-mm spacers are used, the wheels must be secured using the 5-mm longer wheel bolts used on the 911 GT3, Part No. 996.361.980.00. These wheel bolts are marked with GT or with a red color on the front of the bolt head (arrow) or the rotating spherical cap is galvanized in red.
Length "X" approx. 50mm
Tightening torque 130 Nm(96 ftlb.)
If the spacer is removed, the original wheel bolts, Length "X" approx. 45mm, must be used again.
WARNING:
Wheel electronics units not detected, incorrectly secured or loose on vehicles without Tire Pressure Monitoring (TPM)
- Risk of damage to wheels and/or tires
- Uncontrollable vehicle handling
- Do not mount wheels with wheel electronics units on vehicles without TPM.
Wheels:
Overview of Porsche wheels for summer tires
Identification on the inside/outside of the wheel disc:
Wheel size, rim offset (RO) in mm, Part No. and Porsche logo
Front: 8 J x 18 H2, RO 57
Part No. 997.362.137.01
Rear: 11 J x 18 H2, RO 51
Part No. 997.362.143.00
Front: 8 J x 19 H2, RO 57
Part No. 997.362.157.00
Rear: 11 J x 19 H2, RO 51
Part No. 997.362.163.01
Front: 8 J x 19 H2, RO 57
Part No. 997.362.156.03
Rear: 11 J x 19 H2, RO 51
Part No. 997.362.162.03
Front: 8 J x 19 H2, RO 57
Part No. 997.362.156.04
Rear: 11 J x 19 H2, RO 51
Part No. 997.362.162.06
Front: 8 J x 19 H2, RO 57
Part No. 997.362.156.02
Rear: 11 J x 19 H2, RO 51
Part No. 997.362.162.02
Front: 8.5 J x 19 H2, RO 55
Part No. 997.362.156.55
Rear: 11.5 J x 19 H2, RO 50
Part No. 997.362.162.56
INFORMATION:
Improper handling can damage the wheel surface.
Carry out tire removal and mounting using a bead holding-down device only.
Use a leather pad on the rim flange to support the valve insertion tool.
Only use the Porsche centering clamping set for balancing.
Do not use brushes to clean the wheels because brushes can cause deep scratches that cannot be removed by polishing.
Never use solvents or other chemical substances on tires.
Wheel Mounting:
Tightening torque 130 Nm(96 ftlb.)
Navigation Systems:
After a wheel or tire change, the full locating accuracy is attained only after a trip of approx. 50 km (30 miles), if possible on a highway and at a speed > 60 km/h (40 mph). Furthermore, high wheel slip factor (e.g. wheel spin) can result in temporary incorrect positioning.
Wheel Storage:
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.
Complete wheels can be stacked for storage; we recommend that you increase the tire pressure by approx. 0.4 bar (6 psi).
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 tyres 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.
Disclaimer