(2) 12mm (1/2") 5x120 Ubertechnic Hubcentric Wheel Spacers (72.6/72.56 Bore) for many BMW Vehicles: 318i 320i 325i 328i 335i M3 428i 435i M4 525i 528i 530i 535i M5 Z3 Z4 640i 645ci E36 UberTechnic [VERIFY FITMENT] Applicable for most BMWs from the 1990s and 2000s. Will not work on 7-series, SUVs, and newer 2010+ F Chassis. Before purchasing, see Description section for specific year and models and also to read the Important Notes section. [SPECIFICATIONS] Thickness: 1/2" (12mm). Bolt Pattern: 5x120. Hub Bore: 72.6mm | NO LUG BOLTS INCLUDED. Extended bolts required for proper installation [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 corrosion. [PRODUCT BENEFITS] Gives your vehicle a more aggressive stance. Improves handling characteristics and stability. Fixes brake caliper clearance issues. Increases tire clearance to allow installation of wider wheels and tires.