Firstly, it is known that the only part of the vehicle connecting with surface of the road is the four black rubber wheels. It is not just a simple thing of black color, rubber material and round shape, but it is the most significant and sophisticated part of car. 

         In fact, many companies secretly spend millions dola on developing, testing and initializing tires annually. Tire is also a unique part that car players cannot interfere. Choosing the right one is the most important task of a racer.  

         The manufacturers usually have a dedicated team of engineers to help the team choose tires. As a car user, you must learn to choose the tires basing on demand of use. 

Not just a rubber ring

         Tire is not just a rubber ring made by pouring rubber into a mold. Its components are as complex as human body with special structures in the different parts to create strength, flexibility and durability to withstand the pressure and temperature continuously. 

          The great thing is that the tire has to take over many roles. Tires must has traction but as more durable as possible, creating good response to the driver but need to be still quiet, less noise. In addition, tires should be cheaper to meet various needs of customers. 

          Most basic tire should have pressure cavity and several main functions. The most important thing is to create good interaction and response between the car and the road.   

          Today, the average contact surface of the tire or footprint has an area as large as a human hand. Four contacting lines are the only area accelerating speed, controlling and braking of such a big iron towards the road.

          Acceleration, braking, and cornering depend entirely on grip generated by interaction between tread and the road surface. Slick racing tires have good adhesion, but cannot run in bad road conditions. Tire tread is designed to separate water, snow, mud from the wheels to maintain rubber on the road.

           Tread is one of the most difficult factors because other factors such as dry and wet traction, durability, noise often conflict in design. Tire designing is the art of balancing these factors.

          Pressure cavity has to bear the whole vehicle in both static and dynamic status. Each tire has to load partial weight, which can change at any time due to movement of the vehicle.

           Tire’sload is effective if it has hard structures, such as of forklift and car, but car tire must share a portion of shock and the instability of the road. Therefore, another function of the tire is to reduce the trauma and be a shock absorber.

  New tire technology

         Famous tire manufacturers such as Michelin, Pirreli or Goodyear have developed their own techonology. Structure of advanced tire is complex and unique depending on the manufacturer. See the following side-section of tires made by Goodyear as well as accompanied techonology.

Silent Armor Technology

          SilentArmor technology has created SUV tires, which provide longer working life and less noise. Secret of SilentArmor techonology lies under the tire surface.

          A sound absorbing ultra-sensitive layer between the tread and the belt helps the new tire to reduce noise, bring comfortable and smoothy transporation as passenger cars.

Active CornerGrip Techonology

Active CornerGrip Technology allows drivers to control hurry turning corners gently thanks to following characteristics: 

Equal pressure distribution

 When cornering, the car's weight distribution tends to be shifted to the shoulder of the tire, the tire traction in the outer increases while the tread traction inside the tire dramatically reduces.

Eagle F1 Asymmetric tire was developed with the goal of increasing surface contact area by distributing pressure more evenly across the width of the tread.

Safe driving control

         A layer of aramid (elastic materials of which resistance is five times higher than steel) in the inside of tire section reinforcing resistance when car at cornering, creating more even pressure distributed across the contact area, generating stronger traction.

           Tire hoop of Eagle F1 Asymmetric is not usually triangle shape as previous versions. It has larger area contacting with the road surface as well as provides more traction at cornering. 

Tread contacting the road of Eagle F1 Asymmetric has fewer corners than that of Eagle F1 GSD3, it means that contacting area is larger and traction increases.

            Active contacting mark of car tire

         Eagle F1 proves larger contacting area of tire with road surface as well as more even pressure distributed on the tread.

Safety layers of car tire

With special Silica component and large grooves, Exellence tire of Goodyear optimize braking function and accurate controlling function in both dry and rainy conditions.   

             Leaning tread block combined large circumferential grooves in safety layer provides effective brake and operation.   

         Special Silica formula made from natural Silica complex and polymer under new technology strengthens controlling function in both dry and rainy weather. In addition, it helps to reduce friction and fuel saving.  

Traction increasing layer

Hard shoulders of the traction-increasing layer (Handling Zone) help to increase traction enhancing cornering and braking actions, even in harsh conditions.  

Smoothing layer

 Rubber buffers of smoothing layer provide fewer vibrations, smooth and comfortable ride.

Tires are very important parts directly affect your safety while driving on the road.

- You should regularly check tire pressure and erosion of tread. Improper pressure causes short working life, fuel comsuming and even leads to accidents on the road.
- Regularly clean the surface of tires, do not let rock, soil or any foreign objects attached into the grooves of the tire because they can affect the operation of the tire.

- Check cutting mark on the surface of the tires. It is necessary to change for the new one if the tire is damaged and is unable to repair.

- Erosion is limited in the tread length of 1 mm.

- Scooter as PIAGGIO – VESPA currently uses tire without tube. Specifications of tires are indicated in below table.