Why Are Race Car Tires Wide?

Wider tires provide more resistance to slippery spots or grit on the road. Race tracks have gravel, dust, rubber beads and oil on them in spots that limit traction. By covering a larger width, the tires can handle small problems like that better.

Are wider tires better for racing?

Wider tires, assuming all other factors are equal, commonly have stiffer side-walls and experience less roll. This gives better cornering performance. Friction is proportional to the normal force of the asphalt acting upon the car tires.

What is the point of wider tires?

Advantages. Larger tires improve handling and cornering, due to wider tread faces and stiffer sidewalls. Wider tires may decrease braking distances on dry pavement. Wider tires may also increase acceleration, especially in very powerful vehicles such as muscle cars.