Tread profile of a vehicle tyre

The tread profile has mutually spaced profiled elements (1-3) that are provided with narrow line or groove-like depressions (6) formed with radially inner extending portion of extension height (T2), and radially outer extending portion of extension height (T1). A groove base (9) formed in radially inner extending portion is extended with respect to outwardly bounding surface (11). The opening width (B) of tubular opening channel (8) is set greater than cutting width (D) of incision (7). Dome-shaped projections (10) are formed along extension length of groove base.