Pneumatic tire for passenger car, has tunnel-shaped channel opening in partially open transverse groove, where transverse groove drains out water collected in circumferential groove outside of tire

摘要

The tire has tread bars linked by a set of circumferential grooves (2) and disconnected by a set of transverse grooves along a circumferential direction. A side edge (7) of the circumferential groove is provided with a set of optimized recesses (4). The flow-optimized recesses open in a drainage aperture with a tunnel-shaped channel (5) for drainage of water from the circumferential groove. The channel opens in the partially open transverse groove. The transverse groove drains out the water collected in the circumferential groove outside of the tire.