how do tire treads actually generate more traction on flat surfaces?

Question

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?

In: 186

Answer 1

They don’t.

As you correctly noted, a “slick” tire will have the most contact with a dry, flat, rigid surface, hence provide the great esthetic traction.

Unless it’s wet and the tire grooves move water out from under the contact patch.

Or it’s a loose or soft surface that the tread can actually grip onto.