By using variable width tread depths Nankang have been able to reduce the tread noise which in turn is able to provide a much quieter comfortable ride. 21.03.2026, 07:08:08. The NS-2 has excellent wet grip due to two centre circumferential grooves that are able to direct water away from the tyre which enchances the wet handling, while V shaped grooves on the tread are able to increase resistance to hydroplaning through deep water at high speeds.