Porsche Cayman Owner's Manual page 240

Removing spacers
1. Unscrew both countersunk screws (M6x16)
on the wheel hub.
2. Remove the spacer.
3. Fasten the brake disk with the short
countersunk screws M6x12,
Tightening torque 10 Nm (7.5 ftlb.).
For wheel mounting without a spacer, 5 mm
shorter wheel bolts must be used.
4. Fit wheel and screw tight.
Tightening torque: 160 Nm (118 ftlb.).
For information on fitting wheels:
f
Please see the chapter "CHANGING WHEELS"
on page 232.
238
Minor Repairs
Long wheel bolt
X = bolt length approx. 1.9 in. (49 mm)
Arrow = spherical cap ring
Wheel bolt identifying features
For identification purposes, the movable spherical
cap ring is galvanised in black on the long wheel
bolts.
The long wheel bolts must only be used when
5 mm spacers are fitted.
The short wheel bolts must only be used without
5 mm spacers.
Tightening torque for both wheel bolts: 160 Nm
(118 ftlb.).
h
Short wheel bolts
WARNING
If spacers are fitted, wheels are held securely only
if long wheel bolts (1.9 in./49 mm) are used.
Wheels may become loose while driving if they are
fitted using short wheel bolts.
f
After fitting spacers, use only long wheel bolts
(1.9 in./49 mm) on all four wheels.