L. Carbon. The Long Link carbon creates a chain across the tire on the molecular level which enhances the structure of the tire. The tire's tread is strengthened this way, as the L. L. Carbon slows down the tread wear rate and prevents irregular wear. The forces of acceleration, braking and cornering are equally spread out across the tread area which makes the tire wear evenly. The tire's longevity is also the result of the reinforced internal steel belt structure of the tire, as it resists punctures. The tire is usable for a longer period of time due to these improvements.