Vehicle care 201indicators (TWI). Their position isindicated by markings on thesidewall.If there is more wear at the front thanthe rear, swap round front wheels andrear wheels. Ensure that the directionof rotation of the wheels is the sameas before.Tyres age, even if they are not used.We recommend tyre replacementevery six years.Changing tyre and wheelsizeIf tyres of a different size than thosefitted at the factory are used, it may benecessary to reprogramme thespeedometer as well as the nominaltyre pressure and make other vehiclemodifications.After converting to a different tyresize, have the label with tyrepressures replaced.9 WarningUse of unsuitable tyres or wheelsmay lead to accidents and willinvalidate the vehicle typeapproval.Wheel coversWheel covers and tyres that arefactory-approved for the respectivevehicle and comply with all of therelevant wheel and tyre combinationrequirements must be used.If the wheel covers and tyres used arenot factory-approved, the tyres mustnot have a rim protection ridge.Wheel covers must not impair brakecooling.9 WarningUse of unsuitable tyres or wheelcovers could lead to suddenpressure loss and therebyaccidents.Vehicles with alloy wheels: Whenmounting steel wheels with alloywheel nuts, e.g. when changing towinter tyres, the wheel covers cannotbe attached to the steel wheels.Tyre chainsUse tyre chains only on front wheels.9 WarningDamage may lead to tyre blowout.Tyre chains are permitted on tyres ofsize 215/65 R16, 215/60 R17 and215/55 R18.
