Metzeler Roadtec Z8 Rear Motorcycle Tire 170/60-17 2069100 The new Z8 Roadtec Interact with its Multi Zone Tension technology, new updated tread profiles, and functional tread pattern is set to take the pinnacle of the sport touring tire class A final footprint area 8% wider as compared to its predecessor due to the variation of steel belt tensions and a strategically placed tread pattern which optimizes pressures in the footprint area The Roadtec Z8 Interact achieves its best-in-segment mileage and optimal wet performance throughout the tires life thanks to an innovative tread pattern, a widened and more elliptical footprint, and a host of wear-resistant technologies not normally seen in motorcycle tires Metzelers new patented tread pattern reduces front tire land-sea ratio to 11% and the rear tire land-sea ratio of 13%. Strategically placed longitudinal central grooves provide ideal drainage for more than 3/4 of all lean angles in the wet.