Mercedes-Benz SLK-Class 2006 Owners Manual - Manual (Page 394)

393
Practical hints
Where will I find...?
!
Wheel bolts 2 must be used when
mounting the spare wheel with
collapsible tire. The use of any wheel
bolts other than wheel bolts
2 for the
spare wheel with collapsible tire will
physically damage the vehicle’s
brakes.
Warning!
G
Make sure to use the original length wheel
bolts when remounting the original wheel
after it has been repaired.