Metzeler Roadtec Z8 Interact 140/70ZR18 (67W) The new Roadtec Z8 Interact is designed to make riding easier, regardless of the motorcycle – for a long and safe experience.•The new tire contour together with the patented profile design improves handling and reduces steering effort significantly - for maximum confidence in all riding conditions•New Design: The profile shape, inspired by the Greek letter "Pi", maximizes the flexibility of the profile, thus ensuring an optimum tire footprint under in all conditions. The 3-zone-tension Interact ™ Technology gives outstanding mileage and sporty cornering grip.