Mercedes-Benz CLS-Class 2008 Owners Manual - Manual (Page 440)

439
Technical data
Rims and tires
Same size tires
Model CLS 550
Rims (light alloy) 8.5 J x 18 H2
Wheel offset (front axle) 1.38 in (28 mm)
Wheel offset (rear axle) 0.71 in (18 mm)
Summer tires
1
1 Radial-ply tires
-
Winter tires
1,2
2 Not available as factory equipment.
245/40 R18 97V XL (Extra Load) M+S .
!
Winter tires on rims with different wheel
offset front vs. rear cannot be rotated.