Mercedes-Benz CLS500 Operator's Manual page 322

!
Some tire sizes do not leave adequate
clearance for snow chains. To help
avoid serious damage to your vehicle or
tires, use of snow chains is not permis-
sible with the following tire sizes:
245/40 R18 97V XL
(Extra Load) M+S.
285/35 ZR18 97Y
285/35 ZR18 101Y XL (Extra Load)
285/30 ZR19 98Y XL (Extra Load)
T 155/70 R17 110M
175/55-18 95P
Operation
Winter driving
321