Legendary looks, brutally epic strength. Each Rugged Ridge steel wheel is stamped from heavy gauge steel and powder coated with a durable black finish Our wheels have been engineered, tested and certified to meet and exceed the strenuous SAE J2530 standards for wheel strength and durability. Turning a million cycles at double their load capacity to ensure they could hold up to the abuses of off road use. Because a Jeep isn't a Jeep until its lifted and outfitted with oversized wheels and tires. These black D-window steel wheels from Rugged Ridge measure 15-inches x 8-inches with a 5 on 4.5-inch bolt pattern and 3.75-inch backspacing.