This hub-centric design centers the wheel over the hub providing proper balance, clearance for brakes, steering components and suspension. Stainless button-head cap screws around the perimeter give a great 3-piece look. Wheel includes a UV-treated black center cap that replicates a manual hub for that off road look. Rugged Ridge wheels have been independently tested and certified to meet/exceed SAE J2530 standards for wheel strength and durability. Backspacing is 4 9/16╬ô├ç┬Ñ with a negative12mm offset.