Grand Prix 5000 S TR Twin Packstronger sidewalls. The new standard in road tubeless ready technology. Ride faster, more comfortable and with increased puncture protection. Made to make you better. Our carcass construction is robust and impervious against damage and penetration from foreign objects. The result: versatile, low weight and an attractive design. In addition, tires made using this technology can also be used as Tubeless or with an inner tube. We recommend the usage of