Specification AgeRangeDescription : Adult AutomotiveFitType : vehicle_specific_fit Brand : StanceMagic BulletPoint1 : StanceMagic Hub Centric Rings made of CNC Machined billet aluminum. These hubrings will reduce or eliminate vibrations caused by a gap between your aftermarket wheel's centerbore and your wheel hub. Having a gap will prevent your wheel from centering properly during installation, leading to vibrations. BulletPoint2 : HUB RING INNER DIAMETER: 66.6mm (Your vehicle's hub lip diameter needs be this size) BulletPoint3 : HUB RING OUTER DIAMETER: 73.1mm (Your wheel's center bore needs to be this size) BulletPoint4 : Compatible with Audi 2009+ A4 S4, 2008+ A5 S5, 2012+ A6 S6, 2016+ A7 S7, 2010+ A8 S8. Compatible with BMW 2016+ X1, 2018+ X3, 2019+ X4, 2018+ X7, 2018+ Z4, 2018+ M5, 2014+ i3 i8, 2019+ 330i, 2017+ 530i, 2017+ 540i, 2016+ 740i. Compatible with Mercedes C E CLK S SL SLK CLA GLA GLC GL. BulletPoint5 : IMPORTANT: Before ordering, measure your rim/wheel center bore and your vehicle hub lip size, and make sure it matches the hub centric rings specifications shown on this listing. Installation is simple and requires common tools used to remove/install rims and tires. NOTE that these can only eliminate vibrations caused by uncentered wheels. Vibrations may also be caused by improperly balanced or damaged wheels and tires, worn out joints, among others. Color : Silver ColorCode : #FF0000 CompatibleWithVehicleType : Passenger Car Coverage : 0.41 Fl Oz ExteriorFinish : Machined FinishType : Metallic FitType : Vehicle Specific IncludedComponents : Brush IndoorOutdoorUsage : outdoor IsWaterproof : False ItemForm : Liquid ItemName : STANCEMAGIC Hubcentric Rings (Pack of 4) - 66.6mm ID to 73.1mm OD - Silver Aluminum Hubrings Hub - for 66.6mm Vehicle Hubs and 73.1mm Wheel Centerbore - Compatible with Mercedes Benz Audi ItemPackageDimensions_Height : 16.1036 centimeters ItemPackageDimensions_Length : 1.397 centimeters ItemPackageDimensions_Width : 16.002 centimeters ItemPackageQuantity : 4 ItemTypeKeyword : hub-centric-rings ItemVolume : 0.41 fluid_ounces Manufacturer : StanceMagic Material : Aluminum ModelName : Wheel ModelNumber : AL-HR-73.1>66.6 NumberOfItems : 1 PaintDilutionPercentage : 100 PaintType : Mineral PartNumber : AL-HR-73.1>66.6 ProductDescription : WHAT ARE HUB CENTRIC RINGS? (Also called hubrings, hubcentric rings, centering rings) This device is installed between the vehicle's hub and the wheel center bore. The hubring fills in the gap between the hub lip and the centerbore of the wheel. This is assuming that your wheel's centerbore is not already centered around the hub. WHY DO I NEED IT? You may experience steering wheel vibrations if your wheel's centerbore does not perfectly center on your vehicle's hub. Hubrings eliminate those vibrations by properly centering the wheel onto your vehicle's hub. HOW CAN I CONFIRM FITMENT? - Hubrings have 2 measurements, typically in millimeters (mm). - The SMALLER of the 2 measurements is the INNER DIAMETER. In the case of this item, it is 66.6mm. This should match your vehicle's hub bore. - The LARGER of the 2 measurements is the OUTER DIAMETER. In the case of this item, it is 73.1mm. This should match your wheel's centerbore. [VEHICLE FITMENT] These hubrings are compatible with Mercedes, Audi, and BMW vehicles with a 66.6mm Hub. Your Wheel Bore must be 73.1mm. Message us with year/make/model if you have any fitment questions. IMPORTANT NOTES - BUYERS ARE REQUIRED TO CHECK BEFORE PURCHASING - Buyers must ensure their Vehicle's Hub is 66.6mm. - Buyers must ensure their Wheel's Centerbore is 73.1mm. - If you are not unsure about fitment or the measurements, please do not guess. Send us a message and we are happy to help. INSTALLATION ADVISORY Be sure to clean your hub prior to installation. Because of the tight tolerances of the hubrings (to ensure tight fit), a dirty hub could cause the ring to not fit. ProductSiteLaunchDate : 2013-06-20T23:38:47.403Z Size : 66.6mm ID to 73.1mm OD SkipOffer : 1 SpecificUsesForProduct : Exterior SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 SurfaceRecommendation : Metal UnitCount : 4 UnspscCode : 25170000 WarrantyDescription : 1-Year Limited Warranty covering manufacturing defects WaterResistanceLevel : not_water_resistant WebsiteShippingWeight : 0.109 kilograms