The CITYBLOCK 2 has been opened up a bit to allow the tire tread to dig in deeper while still having superior wear characteristics.The CITYBLOCK 2 tread pattern has been opened up from the original, which allows the tire to dig deeper in some of the loosest of conditions. The innovative approach to tread design launched a tire that is unmatched in its versatility. From loose dusty tracks to high bite hard packed tracks the CITYBLOCK 2 will deliver consistent performance and has become the workhorse of the AKA tire line. All AKA SC tires feature the industry standard 2.2"/3" bead sizes.