Information On Wheel Bolts

• Use a suitable commercially available tool (a/f 19 mm). No force or impact tools allowed (for example, impact drivers).
• Wheel bolts must never be reworked.
• Replace damaged wheel bolts.
• Examples of damage: Damage to thread and spherical cap, seizure of screw head and spherical cap ring, binding of wheel screws.
• It must be possible to turn the spherical cap ring on the bolt shank and move it in axial direction.
• Do not grease the wheel bolts and security wheel bolts.

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Wheel bolt

Arrows  Contact surfaces between bolt head and spherical cap ring → do not grease