Installing Wheel

Information 

• Use suitable commercially available tools (wrench size 19 mm)! Never use an impact bolter to tighten the wheel bolts. 
• Before the wheel is placed on the wheel hub, re-grease the centering surface of the wheel hub (if required) as necessary with a very thin coat of Optimoly TA (aluminum paste). 
• The wheel bolt consists of two parts that are permanently joined together. Other wheel bolts must not be used. 

Information 

• The assembly pins for removing/mounting the wheel for vehicles with PCCB can be ordered separately as a spare part. Part No.: 999 571 074 30. 

1. In the case of vehicles with PCCB (Porsche Ceramic Composite Brake), screw the two assembly aids (assembly pins) into the wheel hub before mounting the wheel.

   Wheels with sensors for TPM:  Before changing wheels (e.g. changing from summer to winter wheels), check that the wheels are compatible with the vehicle's tire pressure monitoring (TPM) system.

   Fig 1: Identifying Assembly Pins For Vehicles With PCCB Brakes

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. In the event of heavy soiling, clean the wheel bolts and the concavities in the wheel with a lint-free cloth.
3. Always apply a thin coat of Optimoly TA (aluminum paste) on the thread of the wheel bolts, on the shank and between the bolt head bearing surface and spherical cap ring (under the head) -arrows-  . The spherical cap bearing surface -X-  of the wheel bolts that face the wheel must not be greased.
   1. -A-  - Spherical cap ring (permanently connected to the wheel bolt)
   2. -X-  - Spherical cap bearing surface facing the wheel (do not grease)
   Fig 2: Locating Wheel Bolt

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Information 

   • Rework on wheel bolts is impermissible. 
4. Always replace damaged wheel bolts.

   This damage includes mechanical damage to the thread, the spherical cap and damage resulting from seizure of the bolt head bearing surface and spherical cap ring. It must be possible to rotate the spherical cap ring on the bolt shank and to move it in axial direction.

   Information 

   • Always observe the specified tightening torque. The tightening torque for securing wheels is contained in the document 4001TW. →  4001TW TIGHTENING TORQUES FOR FRONT AXLE 
5. Screw in wheel bolts by hand and then tighten evenly. Start at the top when tightening.
   • Silver wheel bolts (up to model year 2011) = 130 Nm (96 ftlb.). 160 Nm (118 ftlb.) also permitted retroactively.
   • Silver wheel bolts as of model year 2012 = 160 Nm (118 ftlb.).
   • Black wheel bolts = 160 Nm (118 ftlb.)