2pc 20mm (3/4") Thick - UberTechnic 5x120 Hubcentric Wheel Spacers - 74.1mm to 72.6mm Centerbore Adapter (CHANGES CENTERBORE 74.1 to 72.6) for BMW E39 5-Series 525i 528i 530i 540i M5 [BMW E39 CENTERBORE ADAPTER SPACERS] Specifically Designed to allow you to put wheels with 72.6mm centerbore on your Vehicle with 74.1mm hub. [VERIFY FITMENT] Applicable for BMW E39. 1996-2003 525i 528i 530i 540i. 1999-2003 M5. Before purchasing, see Description section for specific year and models and also to read the Important Notes section. [SPECIFICATIONS] WHEEL SPACER Thickness: 3/4" (20mm). Bolt Pattern: 5x120. Hub Bore: 74.1mm [HUBCENTRIC DESIGN] Ensures exceptional wheel balance and eliminates chance of vibration. The 74.1mm bore ensures a tight fit on the hub. And the 74.1mm wheelcentric lip functions as an extension of the hub. [MANUFACTURING] Wheel Spacers are CNC Machined to exact specifications from Aerospace Billet Aluminum. Undergoes anodizing process to prevent corrision.