Installing Wheel

Information 

• Use assembly aids (threaded pin for mounting wheel) in order to exclude any possibility of heavy contact of the wheel with the brake disc! The assembly aids (threaded pins for mounting wheel) should be obtained via the Porsche parts service (Part No. 999.571.074.30)! 
• For vehicles with a Tyre Pressure Monitoring system (TPM), every new set of wheels or wheel change must be communicated to the control unit (even if the new wheels have the same specifications as the old ones). To do this, select >>Tyre pressure, Settings, Tyre type and Tyre size<< in the main menu on the instrument cluster and confirm your selection. The control unit then stores these values while the vehicle is driving (at more than 25 km/h (16 mph)). The current tyre pressure is not available during this time. 
• The wheel mounting trolley can be used to make mounting easier, see Workshop Equipment Manual, Chapter 3.4.2. 

1. In the event of heavy soiling, clean the wheel bolts and concavities in the rim with a lint-free cloth.

   The wheel bolts/security wheel bolts (thread and all surfaces) must not be greased.

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Wheel bolt

2. The contact surfaces of the wheel on the wheel hub and brake disc must be clean. Clean them if necessary.

   Re-grease or grease the wheel centring surface on the wheel hub (blue area) -arrows-  with a very thin coat of Optimoly TA (aluminium paste).

   The wheel contact surface on the brake disc (red area) -1-  and on the wheel itself must not be greased (greasing is not permitted). ONLY  the area marked in blue -arrows-  may be greased.

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Greasing wheel centring surface

3. Fit wheel.

   Never use an impact bolter to tighten the wheel bolts! 

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Assembly aids (threaded bolts for fitting wheel)

   1. 3.1 Screw the assembly aids -1-  into two threaded holes that are not next to each other before fitting the wheel.
   2. 3.2 Carefully slide the wheel over the assembly aids -1-  .
   3. 3.3 Screw the other wheel fastening bolts into the remaining threaded holes.
   4. 3.4 Replace the assembly aids -1-  with wheel fastening bolts.
   5. 3.5 Fit wheel fastening bolts and tighten them evenly at the same time. Start at the top when tightening.

   Information 

   The torque specification for the wheel bolts in the Workshop Manual (180 Nm/133 ftlb.) differs from the specification in the Driver's Manual (160 Nm/118 ftlb.).

   The reason for this is that when replacing several axle components on a vehicle, the torque of 180 Nm (133 ftlb.) is absolutely essential due to the settling behaviour of the components.

   When simply changing a wheel, on the other hand, the torque of 160 Nm (118 ftlb.) as specified in the Driver's Manual is sufficient.

4. Tighten the wheel bolts to the prescribed tightening torque. > Tightening torque 180 (133 ftlb.) Nm