Deestone D191. FEATURES AND BENEFITS: Dry weather traction; Enhanced controllability; High speed, racing application; . OVERVIEW: The Deestone D191 is a high performance, summer tire manufactured for racing vehicles.The tire improves the controllability. The model features a completely smooth tread pattern, which lacks any detail. It greatly upgrades the surface contact with this footprint, in order to enhance the steering responsiveness and driving stability. As a result, the tire is able to increase the steering response time and accuracy to the driver's commands, while the structure is secured against the driving pressure. This ensures the driver's better control over the vehicle at all times.The model enhances its high speed durability. It combines the heat-resistant compound, the stronger structure, and the close and constant surface contact improves the high speed performing power. The compound prevents heat build-up along the tread area, easing the pressure off the tire. On the other hand, the construction keeps the ideal tire shape under the high speed pressure, while the road contact ensures even pressure circulations. These improvements enable the tire to securely perform at its best high speed ability, optimizing the tire's racing application.The D191 improves the summer weather traction. The smooth footprint and the summer compound work together to enhance the dry weather grip. They upgrade the dry traction, increasing the model's performing ability. The road contact of the smooth pattern and the heat-resistant compound greatly improves the summer weather grip. However, due to the lack of tread design, this model does not perform well in wet weather conditions. This specific tire model features a BIASED ply construction. 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.