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

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

WhyThe grooves in the tread drain water and keep the tire in contact with a wet road.