Vehicle care 159Wheels and tyresTyre condition, wheel conditionDrive over edges slowly and at rightangles if possible. Driving over sharpedges can cause tyre and wheeldamage. Do not trap tyres on the kerbwhen parking.Regularly check the wheels fordamage. Seek the assistance ofa workshop in the event of damage orunusual wear.TyresTyres of size 185/60 R 15 are onlyapproved as winter tyres.Tyres of size 185/65 R 15 are onlyapproved as winter tyres on vehicleswith a sports chassis. We recommendthat you contact a workshop in orderto find out whether your vehicle isequipped with a sports chassis.Winter tyresWinter tyres improve driving safety attemperatures below 7 °C and shouldtherefore be fitted on all wheels.Tyres of size 195/60 R 15,215/45 R 17 and 225/35 R 18 mustnot be used as winter tyres.Run-flat winter tyres may only beused on factory approved alloywheels.In accordance with country-specificregulations, affix the speed sticker inthe driver's field of view.Run-flat tyresRun-flat tyres have reinforced, self-supporting sidewalls, which ensurethat the tyres always have a certainamount of driveability, even whenthere is no pressure.Run-flat tyres are only permitted onvehicles with electronic stabilityprogram and deflation detectionsystem.CautionCheck tyre pressures regularlyeven if run-flat tyres are fitted.Depending on tyre manufacturer, run-flat tyres can be identified froma marking on the tyre wall. E.g.ROF = RunonFlat for Goodyear orSSR = Self Supporting Runflat Tyrefor Continental.Use of run-flat tyres is only permittedin combination with factory approvedalloy wheels.Do not use a tyre repair kit.The ECO tyre pressure must not beused.Run-flat tyres must not be combinedwith standard tyres.If converting to standard tyres, notethat the vehicle is not equipped witha spare wheel or tyre repair kit.Vehicles with engine Z 10 XEP: Run-flat tyres are not permitted for all rearaxle applications. We recommendcontacting a workshop.