Wheels/Tires - Summer Wheels/Tires & Spacers: Overview
911 (996)13/08 ENU 4440
Manufacturer's Certificate
Summer Tires, Wheels and Spacers
NOTE:
This list of approved products replaces Technical Information No. 6/04 dated August 10, 2004.
Vehicle Types:
911 Carrera/911 Carrere 4 (996)
Model Year:
As of 1999 up to 2005
Information:
Newly approved tires
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:
NOTE:
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 tires sidewall near the tire type designation.
Instruction 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 = directional mounting
"Rotation"
Inscription "Inside/Outside" = mounting on specified side only
Arrow with both = directional mounting and mounting on
inscriptions "Rotation" and specified side only
"Inside/Outside"
NOTE:
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 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 degrees F/7 degrees 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 minim 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:
NOTE:
The tire pressure applies only to the tire makes and type approved by Porsche, and is specified for cold tires (approx. 68 degrees F/20 degrees C. The tire pressure must never be lower than the specified values.
Wheel Mounting:
The tightening torque for secureing wheels and spacers is 130 Nm (96 ftlb.).
Sizes
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.996.361.203.90.
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. 50 mm
Tightening torque 130 Nm (96 ftlb.).
If the spacer is removed, the original wheel bolts, Length "X" approx. 45 mm, must be used again.
The 17-mm spacer rings are mounted on the wheel hubs using the standard wheel bolts, Part No.996.361.203.00 (dimension X=approx. 45 mm).
Tightening torque 130 Nm (96 ftlb.).
The wheels are mounted on the 17-mm spacer ring using wheel nuts Part No.999.182.003.36. Tightening torque 130 Nm (96 ftlb.)
The 17-mm spacer ring must be removed when mounting the spare wheel.
Wheel Mounting:
The tightening torque for securing wheels and spacers is 130 Nm (96 ftlb.)
Reworking fender lip (only required for vehicles up to model year 2001):
The fender lip and rear spoiler, if necessary, must be reworked in the area shown:
A = transition approx. 50 mm
B = flange approx. 295 mm
C = transition approx. 25 mm
The fender lip must be flanged over a width of at least 10 mm and tallest 60 degrees ; never flange, grind or cut off more than 65 degrees.
Adapting the rear apron:
If the rear apron projects beyond the flanged rear side section (cut-out A), cut or grind off the projecting part of the rear apron (arrow).