Why are NASCAR tires treadless?

Question

Why are NASCAR tires treadless?

Answer 1

beecause -theres no tread on them

if it snows-they wont race

Answer 2

they are called slicks, as they generate less friction between the tire and the ashphalt, they thusly conserve energy and at the same time translate that to velocity!! (Simple, it makes the car go faster than it would if it had treaded tires!)

Answer 3

They do not need the groves...Groves are for traction in wet..They need all the rubber on the track...Like a dragster does././.

Answer 4

gription - more tire touching the track, the more grip it has. plus having thin slick tires allows them to dissipate the heat that builds up within them - necessary given the forces that are put on them and the heat that builds up because of it.

Answer 5

Because they are needed to turn fast.

Answer 6

The more rubber on the ground means more traction!!!

Answer 7

Nitrogen Instead of Air

Most of the teams remove the air from the tires and replace it with nitrogen. Compressed nitrogen contains less moisture than compressed air. When the tire heats up, moisture in the tire vaporizes and expands, causing the pressure inside the tire to increase. Even small changes in tire pressure can noticeably affect the handling of the car. By using nitrogen instead of air, the teams have more control over how much the pressure will increase when the tires heat up.

Photo courtesy Goodyear

Goodyear provides the tires for NASCAR Winston Cup cars.

Inner and Outer Tires

On tracks that are more than 1 mile (1.6 km) long, where speeds are faster, NASCAR rules require that tires contain an inner liner. This is essentially a second tire mounted inside the first tire. It mounts to the rim and has its own separate air supply. If the outer tire blows, the inner tire is still intact, allowing the driver to bring the car to a controlled stop.

Different Compounds for Different Tracks

NASCAR regulates which tire compounds are used on each track. The tire compound is the material the tire is made from -- a softer compound can provide more grip but wears faster, while a harder compound will last longer. Each track causes tires to wear differently, and the inside tires wear differently than the outside tires. Track surface, number of turns, tightness of turns and type of banking are all factors that determine how a tire will wear. Since tires are so critical for safety, NASCAR and Goodyear have determined the best compounds for the inside and outside tires for each track, and these are the tire compounds that the teams are required to use.

Treadless Design

NASCAR tires look completely bald, but that's not because they are worn out. It is by design. On a dry track, tires can generate more traction if more of their sticky rubber is in contact with the ground. Putting a tread pattern on the tire helps in wet weather, but in dry weather it is better to have the whole tire touching the ground. That's why NASCAR races stop whenever the track is wet.

Answer 8

they get better grip without tread

Answer 9

Its all about the maximum surface area of the tire on the track...   more tire on the track means better grip!!    But in the rain they don't work very well!!

Answer 10

reduce friction