Sunny NA305 . FEATURES AND BENEFITS: Summer weather traction; Enhanced controllability; High speed performance; . OVERVIEW: The Sunny NA305 is a high performance, summer tire manufactured for passenger vehicles and SUVs.The tire promotes a secure summer weather performance. The asymmetric ribbed tread design, with the optimal notch placement, and the summer compound work together to increase the tire's grip in dry and wet weather. The durable compound actively prevents heat build-up along the tread area during the tire's high heat performance. The ideal tread design's larger surface contact area boosts the dry traction, while the circumferential grooves actively disperse water from below the footprint to increase the wet weather grip. This combination ensures the tire's exceptional summer weather driving safety as it optimizes the surface grip.The asymmetric tread design also upgrades its controllability in summer conditions. The asymmetric tread's ribbed pattern and flat footprint enable the tire to optimize its surface contact throughout the performance. As a result, the model enhances its steering responsiveness and driving stability. In other words, the steering becomes faster and more precise in its response to the driver's commands, while the structure is secured against the driving pressure affecting the model. The ideal outer shoulder tread pattern boosts the maneuvering ability. This pattern heightens the number of biting edges gripping the road surface during cornering, ensuring a safer driving experience.The NA305 guarantees a durable high speed performance. The summer compound and the optimally strengthened internal structure work together to enhance the high speed driving durability. The compound actively avoids heat build-up along the tread area during the tire's high speed performance, while the internal structure maintains the optimal tire shape under the pressure. In this manner, the tire can safely and easily perform at its best high speed capability throughout its lifetime. Manufacturers recommend changing tires every 10 years. As long as tires are properly stored before they are sold, the year of their manufacture will not shorten their service life.