The FastRak design makes these extra heavy duty units perfect for storing today’s larger tires. This bulk rack is recommended for tires that accommodate 16″ and larger rims. 48″ W, 72″ W, and 96″ W units accommodate 6, 9 and 12 tires (estimated) per level respectively. All units are 18″ deep. FastRak Tire Rack – Starter Units feature a newly designed upright that can be “knocked down” for easier shipment. Optional deluxe foot plates and concrete wedge anchors are available for added safety and permanent placement.