For BMW X3 2004-2010 Disc Brake Rotor | 20.4 mm. / 0.80 in. Discard Thickness
Product Info: Part: Disc Brake Rotor Center Hole Diameter: 75 millimeters / 2.95 inches Discard Thickness: 20.4 millimeters / 0.80 inches Nominal Thickness: 22 millimeters / 0.87 inches Outside Diameter: 320 millimeters / 12.