Abstract: The invention relates to a pneumatic vehicle tyre having a tread with at least one, in particular straight, circumferential groove (1) which is formed at profile depth (T1), is delimited by groove flanks (5, 6) and a groove base (4) of U-shaped cross section, and has a width (B1) which is ascertained at the tread periphery in the axial direction, wherein a number of projections (7), which are arranged distributed over the circumference of the circumferential groove (1) and are situated opposite one another in pairs in the axial direction, is formed on the groove base (4), possibly with connection to the groove flanks (5, 6), a groove path (8) of the circumferential groove (1), which groove path reaches profile depth (T1), has a constriction and is of symmetrical configuration with respect to a plane (E1) which is spanned by the radial direction and a vertical to the centre line of the circumferential groove (1), running between respective projections.