2pc 15mm 5x120 Hubcentric Wheel Spacers - 74.1mm to 72.6mm Centerbore Adapter - Includes (10) Black Lug Bolts - 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: 15mm. Bolt Pattern: 5x120. Hub Bore: 72.6mm | LUG BOLT Thread Size: 12x1.5 | Shank Length: 42mm | Seat Type: Cone Seat | Grade: 10.9 [HUBCENTRIC DESIGN] Ensures exceptional wheel balance and eliminates chance of vibration. The 72.6mm bore ensures a tight fit on the hub. And the 72.6mm 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. Lug Bolts are manufactured with cold forged steel. Zinc coating provides exceptional corrosion resistance and appearance. Additional Heat Treating Process ensures dependable strength & durability.