What is the main purpose of the grooves and slots in the tread of tires?

Question

DentroTest · Accepted Answer

The tread pattern and grooves serve two essential functions for safety: ensuring the friction and grip of the tire on the road surface, in both dry and wet conditions, and channeling water to evacuate it toward the sides and prevent aquaplaning. Preventing overheating is not their purpose, because tire temperature depends mainly on inflation pressure and rubber composition. Nor is increasing flexibility: flexibility is determined by the design of the casing, the internal belts and the sidewalls, not by the outer pattern of the tread.

What is the main purpose of the grooves and slots in the tread of tires?

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