Pneumatic vehicle tyre with circumferential channel

A pneumatic vehicle tire comprising:

• a tread (2) having a profiling and which has a circumferential groove (1) which runs in encircling fashion in a circumferential direction of the tire;
• the groove being formed to a profile depth PT and comprising, in cross section perpendicularly to the circumferential direction, a first groove portion (4) and a second groove portion (5) adjoining one another in a radial direction R, with the second groove portion (5) being radially inward of the first groove portion (4),
• the first groove portion (4), in cross section, being symmetrical with respect to the radial direction R and having a width in the axial direction A perpendicular to the radial direction R that is less than 3 mm and does not vary by more than 10%,
• the second groove portion (5), in cross section, being wider in the axial direction A in comparison with the first groove portion (4), and having the largest cross-sectional area of all the groove portions, and the cross-sectional area of the second groove portion (5) being asymmetrical to the radial direction R, and extending on both sides of the radial direction R and having a border without corners in a bottom region (6) of the circumferential groove (1),
• wherein the cross-sectional area of the second groove portion (5) between an imaginary line running in the radial direction R and the side (8) of the circumferential groove (1) pointing to the center of the vehicle tire is between 10% smaller and 15% larger than the cross-sectional area of the second groove portion (5) between the imaginary line running in the radial direction R and the side (9) of the circumferential groove (1), which points to the outside of the vehicle pneumatic tire;
• wherein, in cross section, the imaginary line running in the radial direction R is centrally axially located to axially bisect the width in the axial direction A of the first groove portion (4).