A lot of people are stressed out under the noise from the vehicle interior that during driving. Previously, Block Type Sound Absorbent Material was not attached in tire, so a lot of people is exposed noise. That will decrease their concentration in doing driving. It can lead to a serious accident. But If you use N'Fera AU7 tires, You can enjoy the quiet and safe driving. I thought about the idea of N'Fera AU7 by focusing on two issues. First Issue, Recently, vehicle has become gentrification. For this reason, the interor sound of the vehicle has been reduced by developing the quality of vehicles.Therefore, the noise transfer caused by air inside of tire is amplified to the driver. Becuase of this phenomenon, the driver's discomfort increases, and the performance requirementsfor the tire noise have increased. Second issue, Sales of electric cars are increasing. The world is gradually running short of oil. And The environmental pollution is a serious issue. Because of this, Eco-friendly energy is emerging as an important issue, so companies and governments devote energy to the study about electric car. As the electric car developed, a research on tire for low noise is becoming a serious issue. The motor of the electric car noise is much smaller than the engine. Many people feel that the noise of the tires sounds louder than before. The auto industry expects the electric car market to grow to one million units by 2020. Accordingly, the appropriate noise tire is required for electric Car. So I Propose a Noise Free System of tire that for the cosy driving.