I can understand in off-roading because they would actually bite into the ground and push against it, but if the road does not deform into the treads then wouldn’t it be better to have them slick for more surface area? why do race cars use slick tires and not consumer vehicles?
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Normal tires need to deal with rain and water much more often than a race tire does. The channels and grooves in the tire allow water to flow out from under the main treads; if there wasn’t a space for the water to flow, it would simply stay there, forming a slippery surface and forcing your car to hydroplane over it.
The lifespan of a race tire is much shorter than consumer tires, and races can be picked for good/bad weather, so they aren’t going to need to deal with wet conditions nearly as often. For the average consumer, getting tires changed every time the weather turns would be extremely cumbersome.
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