Mercedes-Benz CLS-Class 2008 Owners Manual - Manual (Page 445)

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Technical data
Rims and tires
MOExtended tires*
Model CLS 550 CLS 550
Front axle:
Rims (light alloy) 8.5 J x 18 H2 8.5 J x 18 H2
Wheel offset 1.10 in (28 mm) 1.10 in (28 mm)
Summer tires
1,2
1 Radial-ply tires
2 Must be used in conjunction with Tire Pressure Monitoring System (U.S. vehicles), Run Flat Indicator (Canada vehicles), or
Advanced Tire Pressure Monitoring System* (Canada only).
245/40 R18 93Y MOExtended –
Winter tires
1,2,3
3 Not available as factory equipment.
– 245/40 R18 97V XL (Extra Load) M+S .MOExtended
Rear axle:
Rims (light alloy) 9.5 J x 18 H2 8.5 J x 18 H2
Wheel offset 1.30 in (33 mm) 0.71 in (18 mm)
Summer tires
1,2,4
4 Must not be used with snow chains.
275/35 R18 95Y MOExtended –
Winter tires 1,2,3 – 245/40 R18 97V XL (Extra Load) M+S .MOExtended