The Ultrac Vorti is Vredestein's Max Performance Summer tire designed for drivers of performance sedans, sports cars, sporty coupes and high-powered luxury vehicles who want confident braking and high speed traction combined with precise and responsive steering in dry and wet conditions. The Ultrac Vorti excels in the warm dry and wet, so like all Max Performance Summer tires, it is not intended to be serviced, stored nor driven in near- and below-freezing temperatures, through snow or on ice. A high-traction tread compound delivers enhanced dry and wet braking and lateral grip and is molded into the asymmetric pattern of the Ultrac Vorti. The stable center rib improves steering response and precision, while the rigid, low-void outboard shoulder enhances handling. More void in the inboard shoulder aids wet traction and handling, and the wide, circumferential grooves help water flow through the contact patch for improved hydroplaning resistance. Internal construction of the Ultrac Vorti features a two-ply, rayon casing for strength and durability. Two nylon reinforcement plies provide high-speed capability, and the wide, steel belts feature application-specific tuning. Tire sizes intended for front axles utilize a lower belt angle, while rear tire sizes use a high belt angle to optimize the balance between grip and stability in high-horsepower vehicles. Note: Tires exposed to temperatures of 20 degrees F (-7 degrees C) or lower must be permitted to gradually return to temperatures of at least 40 degrees F (5 degrees C) for at least 24 hours before they are flexed in any manner, such as by adjusting inflation pressures, mounting them on wheels, or using them to support, roll or drive a vehicle. Flexing of the specialized rubber compounds used in Max Performance Summer tires during cold-weather use can result in irreversible compound cracking. While compound cracking is not a warrantable condition because it occurs as the result of improper use or storage, tires exhibiting compound cracking must be replaced.

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Ultrac Vorti