Why do your everyday consumer vehicles have tires with tread, but Formula 1 tires are smooth?
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F1 rain tires have tread. The primary purpose of tread is to give water somewhere to go. If it doesn’t have anywhere to go, it wedges between the tire and the surface. This is called hydroplaning and is pretty close to driving on ice, there’s no grip.
Most consumer tires also have tread patterns that can handle snow better. More and deaper void area means more grip in snow (up to a point). Some tires also have small slits or “sipes” to help on ice.
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