The D207 ZR combines the best of Dunlop's street and track technology to set new standards among sport radial tires and offers more grip and better handling for enhanced cornering and exceptional tire compliance for all-day riding. New cosecant-wave tread pattern for superior grip in dry and wet conditions. New tire compound enhances grip and provides quick tire warm-up time. New profile for better feel and more progressive steering response. New construction: cut-angle breaker in front and JLB - Jointless Band - in the rear for improved stability, handling, grip and comfort. Lighter, to reduce unsprung weight, for better handling. Tire Specifications: Load / speed index: 74W. Recommended rim (inches): 5.50. Overall diameter (inches): 25.83. Overall width (inches): 7.17. Full tread depth (inches): 7/32.