The one of the functions of the grooves in the tyre tread

1. A To facilitate water drainage between the road and the tire and to prevent engine wear.
2. B To facilitate water drainage between the road and the tire and to maintain tire air pressure,
3. C To facilitate water drainage between the road and the tire and to prevent tire wear.
4. D Is too allow water drainage from the tire on wet roads and greater friction and contact with the road..