Hankook Optimo H426 Tires are Now 25% Off Plus Free Shipping! The perfect balance between performance and comfort. The Optimo H426 adopts a unique rib-block design for its shoulder to minimize vibration and noise and to provide a quiet, smooth ride. The use of an advanced silica tread compound offers improved All-Season performance, better treadwear and lower Rolling Resistance for better fuel economy. The Optimo H426 is where All-Season Touring, Luxury and Performance meet.